2021 Relativity
2021 Relativity
Jakob van der Schans(2 May 1891 - 22 Jun 1959)
Maria Roelfsema(20 Sep 1886 - 31 Oct 1962)
Barteld Willem van der Schans
Berendje Woltman
b. 19 Oct 1917
d. 21 Apr 1992, Pekela, Groningen
b. 25 Apr 1919
d.