The record of the annulment of her German nationality names her Cilly and, like that of her twin sister Inge, gives her date of birth as 02/11/1923. The membership list of her tennis club calls her Lilly and gives her date of birth as 02/12/1923. Both give the same address, Breslau, Kuerassierstrasse 26, as her parents. Inge's 1962 Brazilian visa also gives her date of birth as 02/12/1923.