Jacoba de Vries was a daughter of Hartog Abraham de Vries and Betje de Rooij. She married Jacob Sajet in 1904 in Amsterdam. He passed away in 1934. They had three children, among whom Henri and Sara (who passed away in 1908).
Stadsarchief Amsterdam, archiefkaart Jacoba de Vries
In addition, a Jokos file (number 6078) on this person is at the Amsterdam Municipal Archive. Access is subject to auth…