I Elisabeth Laan
* 23-08-1865
† 19-09-1943
x 06-08-1891
Wilhelm Johannes Gerrit Umbgrove
* 17-09-1865
† 28-09-1926

II-a Constantia Margaretha Wilhelmina Umbgrove
* 24-10-1892
† 10-10-1980
x (1) 29-07-1915
Henry Gustav Ulrich Emil Koehn
* 20-06-1892
† 01-05-1963
x (2) 26-05-1922
Albrecht Lorenz Lorenz-Meijer
* 16-06-1891