- Born: 12 Nov 1875, Amsterdam, Noord-Holland, Netherlands
- Marriage (1): Margot Coops on 11 Dec 1899 in Hummelo en Keppel, Nederland
- Died: 27 Apr 1951, Bussum, Noord-Holland, Netherlands at age 75
 Noted events in his life were:
• Occupation: luitenant der genie garnizoen Utrecht.
• Residence: Address, 1875. Amsterdam, Noord-Holland, Netherlands
• Occupation: machinefabrikant, 30 May 1907, Arnhem, Nederland.
Otto married Margot Coops, daughter of Jan Christian Coops and Johanna Isabella Kakebeeke, on 11 Dec 1899 in Hummelo en Keppel, Nederland. (Margot Coops was born on 10 Aug 1876 in Den Helder, North Holland, Netherlands and died on 3 Oct 1945 in Velp, Gelderland, Netherlands.)
Noted events in their marriage were:
• Family Address, 9 Aug 1906. Arnhem
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