Hartog Park, born in 1880 in Amsterdam, vendor and occasional laborer, was a son of Isaac Park and Maria Werkendam. On 2 December 1908 he married in Rotterdam Laura van Klinken, born in 1887 in Gendringen as daughter of Berend van Klinken and Geessien Toorman. The couple had three children, namely Maria, Geessien and Isaac, who probably might have suvived the war. The marriage of Hartog Park and Laura van Klinken however ended in a divorce on 20 September 1918. Of mother and children nothing is further known.
Kaatje de Groot, born in Utrecht, was a daughter of Izak de Groot and Hanna Pappie. She married 21 January 1908 in Amsterdam at the age of 24 Mozes Meents from Amsterdam, aged 21 years and son of Levie Meents and Rachel Hakker. The couple had two daughters, namely Rachel in 1908 and Hanna in 1909, who, as far as known, survived the Holocaust. Mozes Meents however passed away in Utrecht 11 February 1929 and was interred in the Jewish Cemetery in Utrecht.
At the age of 50, Hartog Park remarried in Rotterdam on 26 February 1930 the widow of Mozes Meents, Kaatje de Groot, aged 47 years. Per that date, Hartog Park lived at West Kruiskade 68a in Rotterdam, but moved already 22 September 1930 with Kaatje to Josephstraat 56a. After another four removals, they ended up in July 1940 at Mathenesserweg 142b, where after they moved again to Baljuwstraat 34b, where they were registered per 29 December 1941.
This was also their last known address. Per 22 December 1942 they were unsubscribed in the administration of the Rotterdam Peoples Registry from that address with the annotation "v.o.w." meaning "vertrokken onbekend waarheen" (left, unknown whereto). the notorious eufemism for "deported and killed". However, they were already earlier taken from the Baljuwstraat and deported to Westerbork and on 12 October 1942 from there, put on transport to Auschwitz. On arrival there, 15 October 1942, they were immediately killed.
City Archive of Rotterdam, family registration card of Hartog Park and the residence card of Baljuwstraat 34b; website wiewaswie.nl; website hetstenenarchief.nl/grave Mozes Meents and the file cabinet of the Jewish Council, registration cards of Hartog Park en Kaatje de Groot.