Catharina Philippina Monnickendam was the daughter of Philip Monnickendam and Louise Hartogensis. She married Nathan Bonewit in 1918 in Zaandam.
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In June 1941, an obituary was placed in Het Joodsche Weekblad for C. Bonewit-Monnickendam.
Het Joodsche Weekblad, 6 June 1941, 12
