Jacob Mug was the youngest of the six children of Mozes Mug and Jetje Brandon. He was born on 12 September 1907 and he worked as an office clerk at the ANWB in The Hague. Previously, he lived at home with his parents in Amsterfdam, but when they moved to Cornelis Springerstraat in the district “De Pijp” on 26 February 1931, Jacob left for Betondorp in Watergraafsmeer, and lived in there shortly with Samuel Teeboom at Ploegstraat 40 I.
On 2 April 1931, Jacob Mug moved to The Hague, where he was registered at Gedempte Gracht 33 and where he lived until the end of that year. In 1932 he lived at Burgemeester Hooftstraat 90 and in August 1932 he moved to Kaapscheplein 64. After some more years he moved to Goeverneurlaan 624 in November 1936, where he lived in with his brother-in-law Joel van Stratum, who was married to his sister, until 11 August 1937. Rosa Mug.
That 11th August 1937, Jacob Mug married the non-Jewish Johanna Alida van der Starre in Den Haag, a daughter of the tram driver Hendrik van der Starre and Anna Jacoba Geertruida Suurmond. Johanna Alida was born on 28 February 1917 in Den Haag. After the marriage was concluded, Jacob and Johanna moved into a house at Marktweg 373 in Den Haag, located opposite the Zuiderpark and near the Hoefkade.
However, the marriage did not last. Already before the divorce was formally a fact, Jacob had left his wife and The Hague on 26 April 1940 for Esmoreitstraat 26 I in Amsterdam West. He stayed there until 6 May 1941 and then moved in with his brother Samuel, who lived at nearby Griseldestraat 23.
On 17 October 1941, Jacob moved to Leonardostraat 7 I, a side street of Gerrit van der Veenstraat, and on 16 March 1943, his last known address in the Netherlands was Pretoriusplein 3 II in Amsterdam East. Also that 17th October 1941, the divorce was registered in the Register of Marriages and Divorces of Den Haag, following the verdict of 18 September 1941 pronounced by the District Court of Amsterdam.
It is not known when Jacob Mug was deported from Amsterdam to Westerbork, which probably must have taken place in the 2nd half of 1942 and after 15 July 1942. From Westerbork Jacob was deported to Auschwitz. According to notes made after the war on his registration card from the Jewish Council, Jacob is said to have died of intestinal kathar and phlegmone.
It has also emerged that the later recovered "Sterbebücher" from Auschwitz (death books) that in accordance with those registers, Jacob Mug was murdered there on 22 January 1943. After the war, the Dutch Authorities determined, partly based on investigations by the Red Cross and testimonies from survivors, that Jacob Mug died on 22 January 1943 in Auschwitz. The Municipality of Amsterdam was then instructed to draw up a death certificate for Jacob Mug, which stated that he died on 22 January 1943 in the vicinity of Auschwitz.
Sources include the Amsterdam City Archives, family registration cards of Moses Mug and Jacob Mug; archive card of Jacob Mug; Municipal Archives The Hague/family registration card of Jacob Mug; Marriage certificate Amsterdam/Mug x van der Starre in 1937; Residence cards of Amsterdam/Ploegstraat 40/Esmoreitstraat 26/Griseldestraat 23/Leonardostraat 7 and Pretoriusplein 3; Amsterdam death certificate no.28 dated 30 October 1953 from the A-register 102-folio 6verso for Jacob Mug.