Heiman Oudkerk was a son of Emanuel Oudkerk and Jogeva Sloog. He was born in Den Helder on 30 November 1877, but left for Amsterdam on 9 February 1894, where he initially ended up with his uncle Gerrit Oudkerk from Schagen (1844), a brother of his father, who lived at Warmoesstraat 103. Uncle Gerrit was a slaughterer and butcher and during that period Heiman worked as a butcher too. Gerrit Oudkerk…