Jozef Wolkenfeld was a son of Izrael Wolkenfeld and Rijfka Kalter.
City Archive of Amsterdam, archive card of Jozef Wolkenfeld and Website www.wiewaswie.nl .
Sara Knoop and Jozef Wolkenfeld had married young, and lived for a while with Sara’s parents in Boerhaavestraat. A son, Hartog, was born to the couple in 1926. Jozef and his wife sold shoe soles and heels at the Waterlooplein market in Amsterdam.
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