Esther de Vries was a daughter of Joseph David de Vries and Hendrina Waag. She married on 4 June 1911 in Groningen to Abraham Behr, who passed away there on 4 August 1918, age 33. After their marriage the couple lived in Haarlem and Rotterdam, where their son Benjamin was born in 1912. Back in Groningen they had another son in 1914, Jozef.
A Liro card exists for this person or family. The original cards are kept at the Nationaal Archief (National Archive) at The Hague.