- Partnership with: Hilda Clara GRAETZ
Marriage: 2 AUG 1933, St Petri Lutheran Church, Keyneton, South Australia
Ancestors of Johann Friedrich Wilhelm KOCH
/-Johann Friedrich Wilhelm KOCH
/-Christian Johannes KOCH
| \-Wilhelmine Ernestine WARNEST
Johann Friedrich Wilhelm KOCH
| /-Johann ZWAR
| /-Peter ZWAR
| | \-Anna HENNERSDORF
\-Johanne Elisabeth ZWAR
| /-Johann Batz PATZOLD
\-Magdalena PATZOLD
\-Marie RENTSCH
Descendants of Johann Friedrich Wilhelm KOCH
1 Johann Friedrich Wilhelm KOCH
=Hilda Clara GRAETZ Marriage: 2 AUG 1933, St Petri Lutheran Church, Keyneton, South Australia