With 1 daughter.

Kaethe Danziger (geb. Halberstaedter) names the wife of Felix Borinsky only as "Elsa"; their marriage certificate provides her dates of birth and maiden surname, Auerbach.

Felix died in Hamburg and Hamburg address books have entries for Elsa, widow of Felix, from 1927 to 1929. Berlin address books have entries for Elsa Borinski, widow, from 1930 to 1935. The 1939 census of Berlin lists her at Westfälische Strasse 70, II; no other obvious family members are listed at this address. A Stolperstein has been laid in to commemorate Elsa at this address.

Two entries in Yad Vashem confirm that she was deported from Berlin to Riga on 05.09.1942; these also give her date and place of birth.