Abraham Ibn Ezra (1089–1167) was a major Jewish writer and scholar in Al-Andalus or Muslim Spain. His writings span Jewish scholarship, theology, philosophy, astronomy, linguistics, and more. His works include Sefer HaShem (Book of the Name), a theological work on the names of God; Yesod Mora (Foundation of Awe), a treatise on Jewish philosophy and ethics; Sefer HaIbbur (Book of Intercalation), a work on the Jewish calendar and astronomy; Commentary on the Torah, his extensive biblical commentaries, particularly on the Pentateuch; and Sefer Tzachot (Book of Purity), a work on Hebrew grammar.
Leon J. Weinberger is the author of Anthology of Hebrew Poetry in Greece, Anatolia, and the Balkans; Early Synagogue Poets in the Balkans; Jewish Poets in Crete Jewish Prince in Moslem Spain: Selected Poems of Samuel ibn Nagrela; Rabbanite and Karaite Liturgical Poetry in Southeastern Europe; and Romaniote Penitential Poetry.