Meijer married Sarah (Sadie) Cohen (24-8-1924 Swansea/1-5-2001 Utrecht) in Swansea (Wales) in 1943. Together they had a son David Theodore de Vries (14-11-1944 Swansea/12-9-1996 Bishkek, Kyrgyzstan). David was buried at the cemetery in Tiel.
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