Jacob Landau

Rabbi Jacob Landau was a 15th-century German talmudist. He studied under his father, Judah, and then moved from Germany to Italy in the mid-15th century. In Italy, he worked as a proofreader in a new Hebrew printing press established in Naples and published his code Sefer HaAgur, for which he is known. At the end of Sefer HaAgur, Landau included a section entitled Sefer Chazon, which includes a series of questions related to Jewish law. Sefer Chazon was later published separately.