Rudolf Ludwig van Gelder was the middle one of the three children of Leizer van Gelder and Johanna an Gelder and was born 10 September 1908 in Essen in Germany. He had another brother Werner Benno and a sister Irma Friederike. Rudolf and his sibs have lost their lives during the Shoah; his mother passed away in 1939 and his father survived the Holocaust and died in 1957 in Rotterdam.
Rudolf Ludwig…