Looking for Thoralf Baartvedt b.1877 in Norway

Hi! I`m looking for my great grandmothers brother Thoralf Kristian Baartvedt born 10.06.1877 in Akerø( the county of Møre og Romsdal) He was the firstborn son of Alf Baartvedt and wife Lilla (born Hasberg) From the archives of Digatalarkivet I`ve found out that he went to America twice, 1.time in 1899 on the Dominion Line and the 2.time in 1909 on the ship Hellig Olav http://digitalarkivet.uib.no/cgi-win/webcens.exe?slag=visbase&sidenr=14&filnamn=emikra1&gardpostnr=190589&merk=190589#ovre I have not been able to find him anywhere else. I know that he probably must have died in America and that he probably must have changed the writing of his last name. Various ways to write the name is Bortveit, Bårtvedt, Bårtveit, Baartveit. Hope that someone can help me! He may also called himself Alfsen (as the son of Alf) but no match for me there either.