the Norweigns back into the 1800s and before could have a different last name than the father. Ole's son could have Olson as a last name. or there last name changed when they moved to a different farm..My grandfather was Steinsland when he was born. When he came through Ellis Island the first time in 1904, his name stayed Steinsland. sometime around 1910 when he became a citizen, he changed his name to Stensland.. Then when he returned to Norway to get married , in 1914, and returned thru Elis Island the second time he used Stensland. At what point , in the software and family tree, do i use the old name and when do i change to the current last name, where would i note this for future generations to understand.. I have been troubled with this for sometime and thought i could reach out to you good members for help.