Meijer Jacob Leons was a son of Isaac Leons and Barendina de Leeuwe. On 5 May 1886 he married Sara Boekbinder in Rotterdam, a daughter of Juda Simon Boekbinder and Lena Izaaks. The couple had eight children; their first born son Izaak passed away however at age 23 in 1909. All other children, namely…