Edvard Pedersen RAMSOJ from Ringsaker

I'm looking for assistance in finding some information about my great-grandfather, Edvard Pedersen Ramsoj. He was residing in Ringsaker at the time my grandmother (Emma) was born in 1880. Her baptism certificate (a copy from 1946) has mention of him being a shoemaker. His wife was Karen Olsdatter. I do have a lot of information about Karen and her family. I have yet to have any luck with Edvard, after searching Digitalarkivet and the University of Tromso site. He and Karen emigrated to Neilsville Minnesota USA and then to Alberta, Canada. Any information or hints for searching very much appreciated. Thanks.