Samuel Okker was married to Louise Tuininga. He was a travelling salesman. He attended the wedding of his daughter Carla Okker to Joseph Nardus Schrijver. The wedding was performed at Westerbork transit camp on 24 April 1943.
Record of marriage certificates of the Westerbork municipality, currently at the archives of Gemeente Midden-Drenthe in Beilen
In addition, a Jokos file (number 51238) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.