2021 Relativity
2021 Relativity
Jan Klazes Vonk(1 Nov 1848 - 17 Jan 1895)
Tjitske Hooijenga(1851 - 4 Dec 1879)
Klaas Jans Vonk
b. 25 May 1875, Tietjerksteradeel, Friesland
d.  
updated 3/27/21
copyright 2021 Jean Wisner Dupon