Thank you for looking. I tried but found it difficult to navigate the census. The family address on October 5, 1873 when Antonette was confirmed was Haum...borg 2.

She was married in the same Trefoldighet parish on 16 May 1878 and the family address was Fredensborg 9. I don't know if that information helps. Lauritz and Antonette’s banns: bottom of the page entry 45

Source information: Oslo county, Trefoldighet, Banns register nr. 2 (1870-1878), Banns records 1878, page 190.
http://www.arkivverket.no/URN:NBN:no-a1450-kb20061009020692....
Page

She and her husband left Christiana in 1880 I think and settled in New Hampshire.

I couldn't find her parents' marriage registration either.

I thought the Norwegian church records were very complete. Am I wrong? Should I look somewhere else?