Alida Vierra married in Amsterdam on 17 July 1942 to Levie Groen, son of Salomon groen and Mietje Noord. City Archive of Amsterdam, archive card of David Vierra and Levie Groen.
In addition, a Jokos file (number 32087) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.