Gulbrand Pederson/Olave Larsdatter

I'm looking for any information on Gulbrand Pederson (aka Gilbert Pederson, later took name of Gilbert Myhre). According to census info he arrived in US in 1875. He was born 1/23/1856. He married Olave Larsdatter (later took name of Lizzie Larson), born 8/27/1852, in Wisconsin on 2/16/1874. Parents of Gilbert: Peder Thorson and Hubel Gulbrandsdatter. Parents of Lizzie: Lars Aasgavard and Christine M. Christoffersdatter.