Mathilda Alida Davidson-Jochems was the widow of Abraham Davidson. The couple had two children: Levie and one child that survived the war. Levie was betrayed while he was in hiding. Under pressure of the circumstances, Mathilda Alida Davidson-Jochems made an end to her life on April 6, 1943.
NIOD, Records Joodse Raad, box 36d, letter d.d. 7 April 1943
In addition, a Jokos file (number 1850) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.