according to my information haakon v. magnuson (born 1270) had a relationship with catherine sigurdsdotter. the result of that was agnes hakonsdatter (b. 1292). she would marry hofter jonson romerlike. there son was named jon (b. 1315). from there to me i have it filled in pretty good. but if anyone can help fill in more about catherine, agnes, hofter, and jon that be great. feel free to write me if can help.