Symcha Horonczyk was born in Poland, he was the second son of Rywka-Fraidla Horonczyk neé Heller and Shimon Horonczyk. After Rywka died he moved, together with his family, to France in 1926. He was single. Symcha Horonczyk was deported to Pithiviers and from there, in July 1942, to Auschwitz where he was murdered.