Isaäc Wagenhuis was a son of David Wagenhuis and Sara Muis. He was born on August 23, 1883 in Amsterdam and he earned his living as a porter and a rag dealer. On 22 February 1912, he married Maria Augurk in Amsterdam, a daughter of Leendert Augurk and his first wife Rosa Bernhard. Maria was born on January 3, 1889 in Amsterdam.
Maria's mother, Rosa Bernhard, however, died in childbirth on 7 Januar…