Jacobus Tigchelaar, born in Harlingen on April 23, 1869, son of Meindert Jans Tigchelaar (drayman, dock hand, workman, merchant and workman) and Antje van der Meer.

Jacobus was married in Amsterdam on September 17, 1898, at the age of 29 to
Christina Wilhelmina Schippers (aged 35 years), born in Amsterdam on September 23, 1862.