Godschalk Veerman and Betsy Adelaar married in 1914 in Deventer. Besides the here mentioned Frederik Karel they had another child Martha Estella.
Stadsarchief Amsterdam, archiefkaart Godschalk Veerman
In addition, a Jokos file (number 53492) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.The Jokos file reveals that a claim was lodged for compensation for valuables surrendered to the Lippmann-Rosenthal looting bank (L-claim, number 12094/1838).