Engelina Sara Roeper was a daughter of Elias Roeper and Evaline van Gelderen.
She married on 3 September 1941 in Amsterdam the widower Manus Groenteman. Together they had a daughter Lydia.
City Archive of Amsterdam, family registration card of Elias Roeper and archive card of Manus Groenteman.
In addition, a Jokos file (number 20625) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.