I'm sorry I know nothing about the brothers descendants. I have only information on their ancestors. Back in the 1970s a relative made family charts of two couples. It followed each of the children and their children etc. It only gave names, no dates, places, or information on spouses other than their names. Benedicte Katrine
Eilertsen married Martin
Monsen, (I have verified that the wife was definately born 1836 and husband may have been also) and had
Pete and Martin. The tree just stops there (contact with the branch seems to have been lost). These branches of the family seemed to have immigrated to WI, MI, MN, ND, and IL so I am exploring all these areas as most new family arrivials seemed to have started out staying with other family when first arriving in the US. I saw your post wanted to reply as your two brother names matched mine. Do you know any of the names of the brother's children? (Often in Norse families that could be a clue)