Theodor and Liesbeth are listed in the Breslau synagogue community address list (ca 1930) at Charlottenstrasse 1; this address is also given on Theodor's death certificate.

Theodor married at least twice. Helen geb. Cohn is known from their marriage certificate, which gives their dates of birth and their parents. Helene died aged 25 years in 1913. The entry in the Breslau synagogue community address list (ca 1930) gives the same date of birth for Theodor as his marriage certificate, and lists his wife as Liebeth geb. Cohn. Liesbeth is named as Theodor's wife on his death certificate.

The relationship, if any, between Helene and Liesbeth (both geb. Cohn) is not know but since their births are less than 6 months apart they cannot be sisters.