Joshua Heschel Chalfan was the son of Dr. Elia Chalfan of Vienna. He died after 1632 but no grave has been found. Joshua Heschel Chalfan is recorded in the 1632 Vienna Grundbuch (Property Register). He was the father of Loeb, Rechel, Salamo and Chaim.
His brother Isak Eisik Chalfan died in 1617 and had a grave in the old Vienna Seegasse cemetery which is included in Bernhard Wachstein’s book. It identifies three generations of ancestors. The graves in the Seegasse were buried during the Nazi era to preserve them, and Isak’s grave has not yet been located.