Marcus Nieweg was married without community of goods to Henriette de Wolff; it was his second marriage. According to the statement of inheritance, there were no children from this marriage and 'both spouses died on the same day in their home at 19 Speerstraat, first floor, in Amsterdam without it being known which one died first'. One day between 6 and 17 May 1943, the spouses had brought their lives to an end, under pressure of circumstances.
Amsterdam municipal archive, Records Jokos, Möbel-claim 8279; property Joods Maatschappelijk Werk; NIOD, Records Joodse Raad, box 36d, letter dd. 17 May 1943
In addition, a Jokos file (number 8279) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.