1 : Lambertha van Nieuwenhuizen, born in Leusden circa 1891.
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.