The Zacuto Family

The name Zacutti / Zacuto / Zacut belongs to Jewish surnames of Iberian origin. Its earliest attested form, Zacut (זָכוּת), evokes in Hebrew the notion of zekhut — merit, favor, innocence acquired before Heaven. It is tempting to read in this name a program: a family whose reputation would be founded on the merit of its deeds and its knowledge. Cautious linguists, however, emphasize that popular etymology cannot be held as certain; the name could also derive from a toponym or from an Arab-Spanish deformation. Strictly speaking, we retain that it is a Sephardic name whose variants — Zacut, Zacuto, Zacutto, Zacutti, Zaccuto — reflect successive adaptations to host languages: Castilian, Portuguese, Italian, Judeo-Arabic.

The inscription of the name in Schaerf's repertoire confirms its Italian acclimatization. Now, Renaissance Italy was precisely the crucible where Italian Jews native to the region, Ashkenazim coming from the north, and Sephardim driven out of the Iberian Peninsula met. Robert Bonfil showed how abundantly Jewish life in Italy during this period was a space of internal plurality, where communities distinguished themselves by their rites (nusḥaʾot), their synagogues and their family names [Bonfil, Jewish Life in Renaissance Italy, 1994]. A surname of Iberian origin acclimatized in Italy tells, by itself, this history of convergence: it signals a family that, having left Sefarad, found refuge and continuity in Italian cities.

The dispersal of the name across Mediterranean space — Castile, Portugal, Italy, North Africa, Ottoman Empire — also reflects the geography of Sephardic exile. Wherever communities issuing from 1492 settled, the name Zacuto could perpetuate itself, transform, become Italianized or re-Arabized according to contexts. It is no accident that neighboring forms are found in the rabbinical registers of Oran, nor that North Africa preserves the memory of families bearing this name [Rabbinical Archives of Sidi Bel Abbès]: onomastics is one of the rare continuous traces across the ruptures of history.

The form Zacutti must thus be understood as the Italian term of a trajectory that begins in Castile, passes through Portugal, and continues in Mediterranean diasporas. It is this trajectory that the following chapters attempt to reconstruct.

No study of the Zacutti lineage can overlook the tutelary figure who established the prestige of the name: Abraham ben Samuel Zacuto, born in Salamanca around 1452 and died around 1515. Astronomer, mathematician, historian and rabbi, he embodied the pinnacle of Jewish Iberian science on the eve of expulsion. His scientific renown was such that his name became, for posterity, inseparable from the astronomy of the age of discovery.

The Ha-Ḥibbur ha-gadol and the Almanach Perpetuum

The central work of Abraham Zacuto is his great astronomical treatise, the Ha-Ḥibbur ha-gadol (the "Great Treatise"), composed in Salamanca in 1478 in Hebrew. This text, founded on astronomical tables of remarkable precision, provided navigators with decisive tools for calculating latitude by the height of the sun. In his introduction to the Hebrew manuscript, Zacuto specified that his demonstration "is based on the knowledge of the movements of the Sun and the Moon" — a formula that sums up the ambition of a mathematical astronomy placed at the service of practical navigation.

The translation from Hebrew into Latin, then into Castilian, was carried out by José Vizinho, a disciple of Abraham Zacuto, and the printed edition appeared in Leiria in 1496 under the title of Almanach Perpetuum. This passage from Hebrew to Latin, then to Castilian, is revealing: it attests to a Jewish science which, without renouncing its roots or its language, accepts being translated and transmitted to a wider audience, thus participating in the movement of diffusion of knowledge characteristic of the Renaissance. This act of translation is, in its own way, an act of intellectual generosity: placing one's knowledge at the service of navigators who would use it to cross unknown oceans.

The astronomical tables of the Almanach Perpetuum played a role in the great Portuguese maritime expeditions. Tradition reports that they were used by Vasco da Gama on his voyage to the Indies, and their influence on the nautical science of the age of discovery is widely recognized by historians of science. A copper astrolabe, precise tables, maritime charts: Zacuto's astronomy equipped the caravels of King Manuel I^st as much as the imaginations of sailors. There is a profound irony in the fact that the Jewish scholar, expelled from Spain in 1492, should have contributed to the voyages that would redraw the map of the world — and, consequently, redistribute the spaces of exile and refuge for his own descendants.

Exile and its stages

In 1492, the expulsion of Jews from Spain forced Zacuto to leave Salamanca. He took refuge in Portugal, where King John II, recognizing his genius, appointed him astronomer of the court. Then came Manuel I^st, under whose reign he continued to exercise his functions. But the forced conversion of Portuguese Jews in 1497 made a new exile inevitable. Zacuto fled toward North Africa — he passed through Tunis — before reaching, according to tradition, the eastern shores of the Mediterranean: Jerusalem or Damascus are said to have been his final refuges. He died around 1515, after traveling, over a few decades, nearly the entire arc of the Sephardic diaspora.

This trajectory illustrates a profound theme of Judaism: exile (galut) not as passive curse, but as ordeal in which knowledge is forged and transmitted. Expelled from Castile, Zacuto did not renounce his learning; on the contrary, he carried it with him, had it translated, had it printed, and continued to write until the end. The zekhut — the merit — of the ancestor expresses itself precisely in this fidelity to knowledge in times of adversity.

If the Almanach Perpetuum secured Abraham Zacuto's scientific renown among non-Jews, it is the Sefer Yuḥasin ("Book of Genealogies") that earned him a lasting place in internal Jewish Memory. Composed in Tunis around 1500–1504, this work is one of the monuments of medieval and Renaissance Jewish historiography.

A Chain of Tradition

The Sefer Yuḥasin is first and foremost a chronicle of the transmission of Tradition (massorah): it traces the chain of sages from Moses to Zacuto's contemporaries, naming the masters and their disciples, the places and periods, the works and debates. In this sense, it belongs to the genre of shalshelet ha-qabbalah — the "chains of tradition" — which constitutes one of the characteristic forms of Jewish historical consciousness. Yosef Hayim Yerushalmi precisely ranks this type of work among the rare truly "historical" undertakings of medieval and Renaissance Judaism, testifying to an effort to order the chain of generations in the face of dispersion [Yerushalmi, Zakhor, 1984].

But the Sefer Yuḥasin is not a mere list: it is also a work of intellectual piety. To name the sages is to honor them, to inscribe oneself in their spiritual descent, to affirm that the catastrophe of expulsion has not broken the thread. Written in Tunisian exile, this book is a response to rupture: facing the loss of Sefarad, Zacuto opposes the immemorial continuity of study and commentary. It is one of the deepest acts of the Jewish value of transmission — mesorah — accomplished in the most painful circumstances.

A Document of Its Time

The Sefer Yuḥasin also contains valuable information on the history contemporary to Zacuto: it evokes events from the life of Iberian Jewry, personalities from his circle, religious and intellectual debates. It is a primary source for the history of Jewish communities at the end of the fifteenth century. Complementary to the Almanach Perpetuum — one turned toward the cosmos, the other toward the community — Zacuto's two major works together form a striking diptych: the man who measured the stars was also the one who counted the sages, as if the sky and human Memory belonged to the same art of observation and calculation.

The expulsions of 1492 (Spain) and 1497 (Portugal) provoked a diaspora whose waves propagated throughout the entire Mediterranean basin. A significant portion of the exiles made their way to Italy, where several states — despite the hostility of certain ecclesiastical authorities — offered conditions of welcome. It is within this movement that one must situate the Italian settlement of families bearing the name Zacut / Zacuto, of which Zacutti is the outcome.

Robert Bonfil described the complexity of Italian Jewish communal structures during the Renaissance, where newly arrived Sephardim had to negotiate their place among established communities, often founding their own synagogues and confraternities [Bonfil, Jewish Life in Renaissance Italy, 1994]. Iberian surnames adapted to new contexts, of which Zacutti offers an example, constitute the onomastic trace of this sedimentation.

The culture of the book and manuscript played a central role in this continuity. Giulia Tamani studied the richness of decorated Hebrew manuscripts produced or preserved in Italy, testifying to the intellectual vitality of the Jewish communities of the peninsula, where learned works circulated — including astronomical and historiographical ones — inherited from the Iberian Golden Age [Tamani, Manoscritti ebraici decorati in Italia, 2010]. A family bearing the name of the Zacuto would have inscribed itself quite naturally within this milieu of scholars, copyists, and cultured merchants.

It is precisely within this milieu that the works of Abraham Zacuto continued to circulate after his death. The Almanach Perpetuum, printed in Leiria as early as 1496, became a common possession of Jewish and Christian libraries of the Renaissance; the Sefer Yuḥasin was copied and commented upon in the communities of Italy, the Ottoman Empire, and the East. To bear the name Zacuto, in this context, was more than a family affiliation: it was an intellectual signature, the mark of a household where one knew how to read these texts, where one understood their language and their stakes. In the absence of notarial acts directly linking the Italian Zacutti to the astronomer, one speaks here of a probable filiation, deduced from the coherence of migratory trajectories and the relative rarity of the surname, rather than of a fully documented genealogy.

Among the Italian lands of refuge, one city occupies a singular place in the History of the Sephardim: Livorno (Livorno). Thanks to the Livornine, the charters promulgated by the Grand Dukes of Tuscany at the end of the sixteenth century, the city offered Jews — and notably the marranes who had returned to Judaism — exceptional privileges: freedom of worship, security, possibility of commerce. Livorno thus became one of the great centers of the Portuguese Jewish Nation.

Lionel Lévy devoted decisive works to this community, tracing the network that connected Livorno to Amsterdam, to Tunis and to the other places of the Western Sephardic diaspora [Lévy, La Nation juive portugaise. Livourne, Amsterdam, Tunis, 1591–1951, 1999]. In this merchant and learned world, families of Iberian origin reconstructed a prosperous Jewish life, articulating international trade and fidelity to the Tradition. Lévy also described the twilight of this world in La Communauté juive de Livorno. Le dernier des Livornais [Lévy, 1996].

It is in this Livornese context — and more broadly Tuscan — that the name Zacutti finds its most plausible Italian anchorage. The Livornese maintained close ties with North Africa, particularly Tunisia, where an important colony of Livornese (the Grana) settled. Now, we recall that Tunis was precisely one of the stages of Abraham Zacuto's exile and the place of composition of the Sefer Yuḥasin. The geography of the lineage thus draws a Mediterranean triangle — Sefarad, Italy, North Africa — within which the name circulated and perpetuated itself.

It is remarkable that the penitential poems of Moses Zacuto (Tikkun Shovavim) were moreover reprinted in Livorno in 1740, long after their first Venetian publication in 1712 — a sign that the work of the Amsterdamse and Mantuan kabbalist retained a vivid resonance in the Livornese communities. The interweaving of the different branches of the Zacuto diaspora — the one that passes through Amsterdam, the one that anchors in Mantua and Venice, the one that radiates toward Livorno and Tunis — confirms that the lineage should not be read as a straight line, but as a network.

Nearly two centuries after Abraham, another figure of comparable intensity emerges in the lineage: Moses ben Mordecai Zacuto, known by his Hebrew acronym RaMaZ (רמ״ז), born circa 1620–1625 into a family of Portuguese marranos established in Amsterdam, died in Mantua on October 1^st, 1697. Rabbi, Kabbalist, poet and spiritual master, he represents one of the major figures of Jewish mysticism in the seventeenth century.

Childhood in Amsterdam and intellectual formation

Moses Zacuto was born in the most vibrant communal birthplace of the Western Sephardic diaspora: Amsterdam, where former marranos openly reclaimed their Judaism, founded academies, printed books, and debated philosophy and theology with freedom unequaled elsewhere. It was in this extraordinarily stimulating environment that young Moses learned Hebrew, the Talmud, and secular sciences under the direction of Saul Levi Morteira, the great Sephardic rabbi of the city. Tradition even says that seated at the same desks as him, or shortly after him, was a certain Baruch of Spinoza — one of the most audacious philosophers of the century. In any case, the two men represent two radically opposed responses to the same crisis: where Spinoza would turn toward pure reason, Moses Zacuto would plunge toward the depths of mysticism.

For Moses Zacuto felt early on the call of the Kabbalah. It is reported that he fasted for forty days to forget the Latin he had learned, believing that this language could not be reconciled with kabbalistic truths — a gesture of asceticism and renunciation of the profane world that speaks volumes about the radicality of his commitment. He left Amsterdam for Poland, where he continued his apprenticeship in Jewish mysticism, before settling definitively in Italy: first in Venice, then in Mantua, of which he became the great rabbi.

The Shorshei ha-Shemot and the magic of divine names

One of the most singular works of Moses Zacuto is the Shorshei ha-Shemot ("The Roots of the Names"), a vast lexicon of divine and angelic names, formulas and kabbalistic practices [Zakhor Corpus id:91dd2303 ; id:490bf689 ; id:289287ba ; id:1e24a743]. This manuscript, collected and written in the seventeenth century and preserved in several copies, including copies catalogued at the National Library [Zakhor Corpus id:1e24a743], testifies to a colossal work of compilation: Zacuto gathers texts from the Lurianic tradition, fragments of Fes Kabbalah — notably lengthy quotations from the Moroccan Kabbalist R. Isaiah Bakish of the sixteenth–seventeenth centuries —, and his own annotations and experiences.

The Shorshei ha-Shemot belongs to the current of practical Kabbalah (kabbalah maʿasit): it does not merely speculate on the nature of the divine, but seeks to deploy its efficacy in prayer, in liturgy, in practices of protection and sanctification. The intention is profoundly pious: to attain, through contemplation and the handling of sacred names, a proximity to the divine that transcends the letter of the Law without ever betraying it. Here we perceive the Jewish value of piety (ḥasidut) in its most intense sense: not external devotion, but an ardent desire for divine presence within the soul. This manuscript, which first circulated in the form of manuscript copies before being partially printed, also illustrates another deeply Jewish value: the care given to transmission, the concern that knowledge not be lost, especially and above all in its most esoteric form.

The Kol ha-Ramaz and the Lurianic heritage

The Kol ha-Ramaz ("The Voice of the RaMaZ") is a commentary on the Mishna, published in Amsterdam in 1719 posthumously [Zakhor Corpus id:5310dcc4]. This title, a play on the author's acronym, itself conveys the awareness the circle of his disciples had of perpetuating an irreplaceable voice. The work contains kabbalistic annotations on the corpus of Louria and Ḥayyim Vital — the two masters of Safed whose thought transformed the face of Judaism in the sixteenth century. Moses Zacuto did not merely repeat Louria: he interpreted it, extended it, applied it to the questions of his own time.

This dimension of kabbalistic exegesis is intimately articulated with rabbinic practice. Zacuto also left a guide to decisions in commercial law, the Shudda de-Dayyane (Mantua, 1678), proof that the mystic was also a discerning jurist, attentive to the daily needs of his community. The conjunction of the Kabbalist and the posek (rabbinic decider) is characteristic of a vision of Judaism in which the halakha — the lived Law — is inseparable from the spiritual dimension: mysticism does not substitute for practice, it illuminates it from within.

Poet and dramatist of the hereafter

Moses Zacuto was also a poet of great fecundity: he is attributed forty-seven liturgical poems, mainly of kabbalistic inspiration. Some were integrated into collections of communal prayers; others appeared in the collection Hen Kol Ḥadash edited by Moses Ottolenghi (Amsterdam, 1712). His most audacious work in this genre is the Tofteh Arukh ("Hell Prepared," Venice, 1715), a dramatic poem describing a journey to the infernal regions from a Jewish perspective, in the ghettos of Venice and Mantua. This descent to hell in Hebrew, inspired by kabbalistic conceptions of Gehinnom, is a literary work of rare originality in Judaism of its era: it mobilizes the resources of poetry to make visible, and thus felt, the eschatological realities that the Kabbalah describes in abstract manner.

A center of transmission: the academy of Mantua

In Mantua, where he served as chief rabbi until his death in 1697, Moses Zacuto created an academy for the study of Kabbalah that became one of the intellectual centers of Italian Judaism. His closest disciples — Benjamin ha-Kohen and Abraham Rovigo — came to join him for extended stays in Venice or Mantua, in order to explore with him the mysteries of Kabbalah. This model of a community of learners gravitating around a master, traveling to access his word, recalls the great circles of Safed a century earlier. The value of implication in collective life — in the strongest sense: creating an institution that will survive the one who founded it — is here manifest. Zacuto formed successors; he did not merely think, he transmitted.

The fate of Sephardic surnames can only be fully understood at the scale of the entire Mediterranean. North Africa — central and eastern Maghreb — welcomed Iberian exiles (megorashim) who intermingled with native communities (toshavim), giving birth to a Judaism of great richness, where names of Spanish and Portuguese origin were transmitted from generation to generation.

Studies devoted to these communities preserve the trace of this. Eliahou-Éric Botbol retraced the life of the Jewish community of Tlemcen, an ancient center of spirituality and learning, marked by the arrival of Iberian refugees [Botbol, Life and Destiny of the Jewish Community of Tlemcen, 2000]. Similarly, the rabbinical archives of Sidi Bel Abbès preserve the memory of Jewish families of Oran, where Sephardic and Maghrebi heritages intersected [Rabbinical Archives of Sidi Bel Abbès]. It is in these collections — registers of circumcisions, marriages, deaths, rabbinical documents — that the persistence of Iberian surnames can be read.

The presence in Tunis, on the one hand, of the Sefer Yuḥasin of Abraham Zacuto as a work composed and no doubt circulated locally, and on the other hand of the Livornese network of the Grana maintaining permanent ties with Tunisia, creates a milieu in which the name Zacuto could continue to circulate in the Maghreb long after the astronomer's death. The penitential poems of Moses Zacuto, reprinted in Livorno in 1740, no doubt reached the libraries of the Livornese community of Tunis, thus extending into eighteenth-century North Africa the kabbalistic influence of the RaMaZ.

The intersection between family memory and the archive takes on its full significance here: a name like Zacutti / Zacuto could, depending on the branches, become Italianized in Livorno while maintaining itself in nearby forms in the Maghreb, faithful to the memory of Tunis where the astronomer had found refuge. The family thus appears less as a linear lineage than as a bundle of scattered branches sharing the same name-memory. In the absence of continuous documentary linking, this connection remains probable, but the coherence of the trajectories lends it real plausibility.

Beyond facts and deeds, bearing the name Zacutti long meant, in the consciousness of families, inheriting a certain idea of Judaism: one that unites scientific knowledge, fidelity to the Law, and an acute sense of the memory of generations. The astronomer Zacuto embodied this synthesis — a man of science and a man of tradition, calculator of the heavens and chronicler of the sages. The kabbalist RaMaZ, two centuries later, offered a different but complementary version: a man of mystery and a man of community, poet and jurist, contemplative and teacher.

What the new sources of the Corpus Zakhor reveal is the depth of this heritage. The manuscripts of the Shorshei ha-Shemot, preserved in several copies at the National Library, testify to the extraordinary diffusion of RaMaZ's thought in European and Mediterranean kabbalistic circles. The Kol ha-Ramaz, published in Amsterdam after its author's death, speaks of the piety of his disciples: they knew that this voice must not be silenced. And the Almanach Perpetuum, in its double language — Hebrew first, then Latin and Castilian — testifies to a Jewish science open to dialogue with the non-Jewish world, unafraid of translation or dissemination.

This articulation of knowledge and faith runs through all Jewish thought. Léon Askénazi emphasized how Jewish tradition is transmitted as a living word, where study is never separated from existential commitment [Askénazi, La parole et l'écrit, 1999]. Armand Abécassis, for his part, showed how Jewish thought unfolds as a journey, "from the desert to desire," inscribing each generation in a dynamic of quest [Abécassis, La pensée juive, 1987]. Medieval Jewish philosophy, of which Zacuto was a learned heir, precisely sought to reconcile reason and revelation, as studied by Colette Sirat from manuscripts [Sirat, La philosophie juive au Moyen Âge, 1983] and Maurice-Ruben Hayoun in his syntheses [Hayoun, La philosophie juive, 2023].

This immaterial heritage pertains to transmitted memory rather than to the archive: it is received as family pride, a way of situating oneself in the long chain (shalshelet ha-qabbalah) of transmitters. Isaiah Berlin subtly analyzed this tension peculiar to the modern Jewish condition, caught between attachment to singular memory and insertion in plural societies [Berlin, Three Essays on the Jewish Condition, 1973]. The Zacutti, by their very name, carry this tension: they are at once heirs to a universal scholar and an accomplished mystic, members of a dispersed Nation, faithful to its memory in exile.

The lineage Zacutti / Zacuto reads as one of the richest condensations of Mediterranean Jewish history. A Sephardic patronym acclimated in Italy, recorded by Schaerf among the Jewish names of the peninsula [Schaerf, 1925], it extends the illustrious root of the Zacut / Zacuto, of which two tutelary figures — the astronomer and historian Abraham Zacuto, the kabbalist and poet Moses ben Mordecai Zacuto — established prestige at two distinct and complementary moments in Jewish history.

From Salamanca to Tunis, from Portugal to Amsterdam, from Venice to Mantua, from the Maghreb to the Orient, the name followed the routes of exile and commerce, maintaining itself through generations as an active and plural memory. The inquiry shows that if the greatness of the two ancestors is solidly established by archives and manuscripts — the Almanach Perpetuum, the Sefer Yuḥasin, the Kol ha-Ramaz, the Shorshei ha-Shemot —, the precise genealogical chain linking the Italian and North African Zacutti to these ancestors remains probable, inferred from the coherence of trajectories rather than from continuous documents. This is the fate of many Sephardic lineages: the name travels more surely than documents.

What endures, at the end of this journey, is Yerushalmi's teaching: Jewish memory often precedes and exceeds critical history [Yerushalmi, 1984]. The Zacutti, through their name, transmit less a documentary certainty than a fidelity — that of a family which, across dispersions, has preserved the memory of knowledge and belonging.

Among all the values and virtues that Jewish tradition has carried through the centuries, what this lineage will have best expressed is the transmission of knowledge as an act of faith and resistance. Abraham Zacuto said it by measuring the stars and naming the wise; Moses Zacuto said it by plunging into the depths of mysticism and forming disciples. Both responded to the catastrophe of exile with the same answer: write, teach, transmit. In this, they partake of a virtue that Jewish tradition has carried from generation to generation, from the scribes of the Mishna to the masters of Safed, from the astronomers of Salamanca to the kabbalists of Mantua — this conviction that knowledge is not a possession, but a gift to be handed intact, enriched, into the hands of those who come after.