Andries Walg was a son of Eduard Walg and Klaartje Blok. He married Leentje Jacobs in 1903 in Rotterdam.
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In addition, a Jokos file (number 7738) on this household is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.The Jokos file reveals that a claim was lodged for compensation for valuables surrendered to the Lippmann-Rosenthal looting bank (L-claim, number 12648/6531).