Lambertha van Nieuwenhuizen, born in Leusden circa 1891, daughter of Cornelis van Nieuwenhuizen and Lubberta van Etten.

Lambertha was married in Amersfoort on April 24, 1913, at the age of approximately 22 to
Lodewijk van Kamp (aged approximately 26 years), born in Amerongen circa 1887, son of Evert van Kamp (coppersmith) and Aukje Keimpes Feenstra (maid servant), traveling salesman.