Elisabeth Swart, the eldest of the nine children of Nathan Swart and Johanna Groen, was the widow of the porter Abraham van Sweeden, who died before the war. They were married in Amsterdam in January 1890.
A copy of their marriage certificate remains.
In addition, Jokos files (numbers 6436, 8335) on this family or other family members are at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.The Jokos files reveal that a claim was lodged for compensation for valuables surrendered to the Lippmann-Rosenthal looting bank (L-claim, number 4784/16666).