Erwin Plaat, son of Louis Plaat and Rosa Marchand, married 16 April 1941 in Amsterdam Roosje Meijer, a daughter of the cheese merchant at Montfoort (province of Utrecht), Simon Meijer and Helena Troostwijk.
He arrived from Duisburg in The Netherlands with his parents and brother Herbert and resided since 16 March 1934 at Amstel 296 III (3rd floor) in Amsterdam.
City Archive of Amsterdam, archive card of Erwin Plaat and Het Utrechts Archief, birth certificate of Roosje Meijer, nr. 36.