Keimpe Johannes van Kamp, born in Amerongen circa 1890, son of Evert van Kamp (coppersmith) and Aukje Keimpes Feenstra (maid servant), fireman.

Keimpe was married in Amersfoort on March 27, 1918, at the age of approximately 28 to
Anna van Voorthuizen (aged approximately 26 years), born in Baarn circa 1892, daughter of Zilvester van Voorthuizen and Aleyda Wevers.