In the København police registry Josephina Marie Rasmussen is listed as being born in København on 14 Jun 1974. There is an Octavius Anskar Rasmussen born in København on 7 Oct 1882.
In the 1880 census for Aabenraa, København, opslag 67, Frederik Carl Rasmussen, age 29, born in Sorø amt, his unnamed wife, age 33, born in Sweden, and two children were absent for the census. They were at a hospital.
A birth of an unnamed son to Frederik Carl Rasmussen and Johanna Nilsdotter, living at Rømersgade (the same street that the family was living at in the 1885 census) on 7 Oct 1882. This record is from Skt Johannes, Sokkelund, København, opslag 19 nr 882. I think this is the Octavius Anskar Rasmussen mention in the police records.
Johanne Marie Rasmussen died 7 May 1918, Helligkors, Sokkelund, København, opslag 16 nr 72. According to the København police records she was born in Sweden on 19 Mar 1847.