Rabbi Abraham Danzig was a halakhic codifier, and the author of Chayei Adam and Chochmat Adam. He was born in Danzig, and studied in Prague under R. Ezekiel Landau. After completing his studies, he was offered a rabbinic position in Vilna, but he declined, preferring instead to occupy himself as a merchant. However, later in life, circumstances compelled him to accept the position. His other works are: Zichru Torat Moshe, a summary of the laws of the Sabbath; Kitzur Sefer Charedim, an abridgement of the classic Sefer Charedim by R. Elazar Ezkari; and Toldot Adam, a commentary on the Passover Haggadah.