2021 Relativity
2021 Relativity
Gijsbert de Jong(7 Apr 1854 - 8 Nov 1918)Willem Valkenburg(26 Feb 1852 - 26 Feb 1929)
Heiltje Kosters(21 Mar 1857 - 14 Nov 1894)Elisabeth Heus(Apr 1856 - 14 Mar 1939)
m. 29 Jan 1914, Haarlemmermeer, NH
Gerrit de Jong 
Apolonia Valkenburg
b. 25 Apr 1884, Haaften, Gelderland
d. 17 Nov 1966, Ripon, CA
b. 11 Feb 1892, Haarlemmermeer, NH
d. 30 Nov 1967, Ripon, CA
Children
William de Jong(1 Mar 1915 - 20 Nov 2003)
Johannes Joe de Jong(1919 - 1991)
Jacob de Jong(19 Nov 1920 - 11 Mar 1999)
Cornelius de Jong(4 Jan 1930 - 29 Mar 1948)