Johannesen and Larsen child

Seem like me great grandmother had a child with an Einar Larsen in 1901 in Norway We had no knowledge of this. Can anyone look into this for me? Dagmar Antoine Johannesen was born in 1883. Einar Larsen in 1881. I don't know if this was an out of wedlock child or if they were married at some point. And what happened to the child, The child's name was Hjordis Larsen. Any help would be appreciated.