Names in Swedish,Norwegian, and Danish get changed when the immigrate to a place where the diacritical marks on the letters don''t exist. Two different A's become one. Two different O's become one. And so forth.
At wikitree, we have some advantages dealing with a worldwide genealogy site, but there are disadvantages also. Some of us have to use special keystrokes,which we don't always remember, to spell the names properly as our key boards don't have multiples A's or O's, etc.