I found the next, but maybe you knew this already.
Gerard Gustaaf Adolf Montange was born on April 2, 1908 in Gouda, South-Holland, The Netherlands
He married to Gesina Frederika Robers, born December 19, 1911 in Rotterdam, South-Holland, The Netherlands, on March 8, 1933 in Rotterdam.
They got one daughter. Georgina Elisabeth Montagne, born September 1, 1933 in Rotterdam. They divorced on December 17, 1935.
The father and mother of Gesina were: Jan Carl Robers, born July 20, 1881 in Hoogeveen, Groningen and Georgina Elisabeth van der Hal, born October 8, 1882 in Vlissingen, Zeeland.
Gesina Frederika Robers remarried on November 24, 1937 in Rotterdam to Kors Sperling. His occupation was navigation officer of the merchant navy.
He was born on February 27, 1905 in Dordrecht, South-Holland. They divorced (probably) on October 18, 1847 in Rotterdam.
There is one son mentioned on this family card:
Martijn Sperling and he was born on April 23, 1938 in Rotterdam.
All information is mentioned on their family cards.
Robert A. van Duuren