David HaLevi Segal

David Halevi Segal, known as the Taz after the name of his most famous work, was a Polish rabbi, halachic scholar and Talmudic commentator. His best-known work, Turei Zahav, is one of the basic commentaries on the Shulchan Arukh (on all four sections, most prominently on Yoreh Deah and Orach Chayyim). He responded to Shach's critiques of his expositions and decisions in a separate work, and also authored Divrei David, a supercommentary on Rashi's Torah commentary. R. Yoel Sirkes (Bach) was his father-in-law.