High Quality Content by WIKIPEDIA articles! Yechezkel ben Yehuda Landau (8 October 1713 29 April 1793, Hebrew: ) was an influential authority in halakha (Jewish law). He is best known for the work Noda Bihuda ( ), by which title he is also known. Landau was born in Opatów, Poland, to a family that traced its lineage back to Rashi, and attended yeshiva at Ludmir and Brody. In Brody, he was appointed dayan (rabbinical judge) in 1734, and in 1745 he became rabbi of Yampol. While in Yampol, he attempted to mediate between Jacob Emden and Jonathan Eybeschütz in a debate - "The Emden-Eybeschütz Controversy" - that "had disrupted Jewish communal life for many years". His role in the controversy is described as "tactful" and brought him to the attention of the community of Prague - where, in 1755, he was appointed rabbi. He also established a Yeshiva there; Avraham Danzig, author of Chayei Adam, is amongst his best known students.