Engeltje van Gelder was the youngest of the thirteen children of Salomon van Geldere and Sophia Polak and was born on 8 July 1878 in Rotterdam. On 9 July 1902 she got married in Rotterdam to Joseph Jacob Zeldenrust, a son of Jacob Joseph Zeldenrust and Catharina Faro. Joseph Jacob Zeldenrust was born on 19 December 1874 and he was a gilder by profession, which meant: covering a subject with a laye…