Could Olga be a stepmother??
I have one:
born 24 july 1909 in Schacksgade 1,Copenhagen
baptized 26 september 1909 in Skt.Andreas Church.
( 1901-1909,Opslag 204).
Parents: Axel Christiansen and wife Augusta
Axel and Augusta married 1 november 1908 in Mariendal Parish,
born 13 october 1884 in Vaalse Parish,Falster Nørre District,Maribo County
baptized 27 november 1884 in Vaalse Church
Parents: Rasmus Christiansen and wife Wilhelmine Nielsen.
Augusta Caroline Eriksen
born 16 december 1883 in Aalborg,Aalborg County
baptized 4 ,ay 1884 in Budolfi Church
Parents: Hans Thomas Eriksen and wife Caroline Schou.