Mietje de Vries was married to Aaron Pais. The couple lived at 35 Hofwijkplein in The Hague.
Amsterdam municipal archive, Records Jokos, Möbel-claim 3995, statement of the right to inheritance d.d. 7-12-1960; property Joods Maatschappelijk Werk
The funeral records at the Jewish cemetery in Rotterdam reveal that Mietje de Vries was buried there.