Oscar Holm

I am searching for an Oscar Holm [October 4,1880] who immigrated to North America in 1900 or 1902. He resided most of his life in North Dakota and Minnesota where he died in 1942. He is said to have come from Grue-Solar which I guess is in Hedmark. We think his name may have been changed at the port of entry, but we have only oral history to confirm this. It may have been Holm-Rennigen or just Rennigen. Any information you may have would be appreciated.