Hebrew name: מגן אברהם
Years: 1635–1682
Primary city: Kalisz
Rabbi Avraham Gombiner was a leading halachic authority who settled in Kalisz after being orphaned during the Chmielnicki massacres. His major work, the Magen Avraham commentary on Orach Chaim of the Shulchan Aruch, became an authoritative and widely studied text that shaped halachic rulings.