of Sefer Yohassin Short biography of Rabbi Abraham Zacuto JewishEncyclopedia A downloadable copy of Sefer haYuchasin printing from the middle of the 19th century Zacuto Foundation commemorates life and works of Rabbi Abraham Zacuto and his Book of Lineage. 1452 births 1515 deaths 15th-century astrologers 15th-century Spanish astronomers 15th-century Spanish mathematicians 15th-century Portuguese rabbis 16th-century astrologers 16th-century Sephardi Jews Court Jews Hebrew-language chronicles Jewish historians Jewish refugees Jews expelled from Spain in 1492 Rabbis from the Mamluk Sultanate Medieval Portuguese astrologers Medieval Portuguese astronomers Medieval Jewish astrologers Medieval Jewish astronomers People from Salamanca 16th-century Portuguese mathematicians Portuguese refugees University of Salamanca alumni Academic staff of the University of Salamanca 15th-century Portuguese historians 15th-century Spanish writers 15th-century businesspeople 16th-century businesspeople Jewish astronomers Sephardi Jews in the Mamluk Sultanate 16th-century Portuguese rabbis 16th-century rabbis from the Ottoman Empire