Isaac David was born in Rotterdam on 3 June 1875 as youngest of the six children of Hartog David and Hendrika van der Sluijs. His eldest brother Levie passed away already in 1909 and two of his sisters, Rosetta and Elizabeth died respectively in 1902 and 1938. But Isaac David self and both his other brothers, Simon and Wolf were killed with their families during the Holocaust; Isaac and Simon in A…