I've never heard about the Suevi, had to look them up. It doesn't seem that they had anything at all to do with Sweden.
Where in Sweden is your ancestor from?
She was my maternal great-grandmother on her father's side, named Louisa Dahl, from a place, apparently, called Dahl or Dahle. She left Europe from an unknown port, possibly a Dutch port, on the USS Rotterdam, which was one of the large international ships carrying immigrants to America during the early 20th century, in 1916, which is, curiously enough, the same ship (not necessarily the same trip, however), as my former husband's grandfather. Her genes most definitely dominate as I and my mother Louisa look very much like the portrait of Louisa Dahl. I have always wondered whether she left Europe because of anti-Jewish sentiment, since the disease I was recently diagnosed with occurs with far greater frequency among Ashkenazi Jews.