With 1 daughter.

Kaethe Danziger (geb. Halberstaedter) names the wife of Felix Borinsky only as "Elsa". A Stolperstein has been laid in Berlin to Elsa Borinski geb. Auerbach, born 13/02/1866 who lived at Westfaelische Strasse 70, Berlin-Halensee. Two entries in Yad Vashem confirm that she was deported from Berlin to Riga; one of them gives her date and place of birth.

Berlin address books have entries for Elsa Borinski, widow, from 1930 to 1935. Hamburg address books have entries for her, widow of Felix, from 1927 to 1929. A Felix Borinsky is buried in Hamburg.

This evidence makes a compelling case for the Elsa Borinski commemorated by the Stolperstein being Felix's widow.