Landau, Jecheskel, a German Rabbi of note, was born about 1720. He flourished first as Rabbi of Jampol, Podolia, and later as chief Rabbi of Prague. He died in 1793. While yet a young man Landau gave promise of great ability as a polemic, and he displayed this quality to great advantage in the Sabbatarian controversy which raged between Eibeschtitz, SEE JONATHAN EIBESCHÜTZ, and Emden. See.Griitz, Gesch. der Juden, volume 10, chapter 11, especially pages 409, 415, 438 Fürst, Biblioth. Jud. 2:216 sq.