Derk Antje Lens 21 apr 1909 (Civil)Assen, 09 jan 1954 Assen. Antje 31 jul 1888 Dokkum. [Gezinsblad] []
Derk Jeltje Johanna Elisabeth Massing 30 sep 1931 (Civil)Assen, 14 jul 1933 Assen. Jeltje 02 dec 1910 Amersfoort. [Gezinsblad] []
Catharina Jacobus Massing 30 sep 1931 (Civil)Assen, 19 sep 1933 Assen. Jacobus 13 okt 1912 Amersfoort. [Gezinsblad] []