Richard Wijngaard was married to Sophia van Kreveld. They were both fur workers. On 18 July 1943 their son Henri Abraham was born in Westerbork transit camp.
Record of birth certificates of the Westerbork municipality, currently at the archives of Gemeente Midden-Drenthe in Beilen
In addition, a Jokos file (number 51413) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.