Israel van den Berg was a son of Abraham Mozes van den Berg (Steeenwijkerwold 1845 - Rotterdam 1921), and Vrouwtje Moscoviter (Amsterdam 1844 – Rotterdam 1918), who were married 4 April 1866 in Amsterdam.
Israel was born into a large family: his parents had 14 children in total, of whom 4 children have died as babies, even before their 1st birthday and 2 children died before their 3rd year of life…