Rachel Knoop, born 3 September 1885 in Amsterdam, was a daughter of Salomon Knoop and Ribca Lopes Cardozo. She married 29 February 1928 the widower of Helena Franken, Alexander Vles, who was born 24 September 1882 in Zutphen as son of Levie Joseph Vles and Sara Snoek.
From the first wedlock of Alexander Vles and Helena Franken two children were born: a daughter Helena was born in 1915, who marrie…