Robert Heiman van Gelder was the first son from the second marriage of Jacob van Gelder and Betjen Hemelrijk, after Jacob van Gelder became widower of Betjen’s sister, Rosetta Hemelrijk. Robert Heiman was born on 8 February 1898 in Amsterdam and he was director milk control by profession. In later years he became a veterinary surgeon.
On 22 September 1926, Robert Heiman married in Amsterdam Rebecc…