Roelof SIEMENS
- Partnership with: Jansina Maria NUIS
- Child: Barend SIEMENS Birth: ABT 1893, Amsterdam, Noord-Holland, Nederland
Descendants of Roelof SIEMENS
1 Roelof SIEMENS =Jansina Maria NUIS 2 Barend SIEMENS =Maria Joanna HILST van der Marriage: 16 Jun 1926, Amsterdam, Noord-Holland, Nederland