The Gulbrand (Gilbert) Gilbertson in my family tree was born 02/19/1846 in Gulbrandalen, Norway and expired 03/16/1940. He married Karen Tollefsdatter (Carrie Tollefson) who was born 09/29/1849 and expired 04/01/1931. His father was Gulbrand Hansen Aasen and mother, Anne Larsdatter Brettingen.
Gilbert was a brother of Hans Gilbertson (My greatgrandfather) born 03/28/1833 in Ringebu, Gulbrandsdalen, Norway and expired 12/15/1909 in Irving, WI. It sounds like we have similar names in our tree, but are decendents of two different Gilbertson families.