Daniël de Vries, the youngest of the six children of Meijer de Vries and Mietje van Coeverden, was born on 10 June 1905 in Amsterdam. Daniël was a musician by profession and he married on 1 August 1928 in Rotterdam his first cousin, Sara Coster, who was born there on 17 January 1906 – also a musician – a daughter of Barend Coster and Betje van Coevorden. Daniel and Sarah had two children, viz. Mei…