Jan Koops(29 Aug 1859 - 11 Jan 1918)
Grietje de Vries(6 Oct 1860 - 9 Feb 1962)
m. 2 Jun 1933, Assen
Jan Arjen Koops
Marchiena de Roo
b. 2 Aug 1892, Assen
d. 22 Nov 1971, Assen
bur.  
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b. 28 Sep 1898, Assen
d. 9 Sep 1964, Assen
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