Some years ago you said your mother insisted the father's name was Torger Dahlin (or similar). Some responses then said he was actually probably Torger Larsen.
Are you now reversing those names? There was a Laura born in Dec 1847 (christened in 1848) to Torger Larsen (b. ca. 1818) and the same man had a son named Otto in Sept 1866. The parents had several other children and resided in Kongsberg, Buskerud, Norway.
The above Laura Torgersdatter married 1871 in Oslo to Martin Mikkelsen.