I also found this:
https://leskjerv.no/aner/000/0006/055.htm#12271
Seems like Margrethe did not marry Nils Jensen but had a child, Johan Nilsen. Later Margrethe married Nils Pedersen.
Adriana, you will get easier contact with Knut if you send him a personal message from Nils's profile. Knut is maybe not reading the discussion forum.
yes. I will. Thank You!