With the help of Arna, you do know that Edvin Ilseth married Hjørdis and they are buried in Hamar, Hedmark. You can go to the Norwegian telephone pages and find names and addresses of several Ilseth family members in Hamar - there were about 12 names and addresses. what are the odds that one of them is related? Pretty good I'd say.I think that you can write them a snail mail letter and make copies and send them to Norway.
Here is the website, and in the search box, type in Ilseth, Hamar http://www.1881.no/http://www.1881.no/