Samson Kleerekoper and Bertha Vega were the parents of 518957.
Samson Kleerekoper's oldest son survived the war with his family.
For a biographical note see: H.E. Dominicus, Mauthausen. Een gedenkboek (2e herziene en uitgebreide druk; Amsterdam 1999) 82.
In addition, a Jokos file (number 33440) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.