2021 Relativity
2021 Relativity
George Leonhardt(1883 - )Adam Slawinski(12 Feb 1897 - 18 Oct 1939)
Bertha Demme(1893 - )Stella Zacharek(7 Dec 1895 - 1964)
m. 1944
John Leonhardt 
Stanislawa Stella Slawinski
b. 4 Jun 1914
d. 28 Mar 2001, Middletown, NY
b. 25 Jun 1921, Jersey City, NJ
d. 5 May 2003, Middletown, NY