I have his gravestone where he is buried in allamakee county Iowa with his wife Anoinette or Antonetta (sp)
Our Father and Mother
Nils M. DOD Aug 6, 1893 50y 7m 1d
would make his Jan 5 1843 DOB perfect
Hansom (believe it was spelled HANSON- her parents were both born in NORWAY - she was born in Allamakee Co IOWA)
wife of Nils M. Redo DOB 8/30/53
DOD June 11, 1891 37y 9m 10d
So I think you have him on your search right?