Torris and Elen Braa Trondheim born 1856

I am seeking the ancestry of Torris Braa and his wife Elen (birth date 1856 for both). Elens maiden name may be Elen Andersdatter. They immigrated to America May 16 1883 by Dominion Ship Line Ship name Dampsk...and their residence was listed as Trondheim. The following was taken from the Shipping information for Torris. They were travelling with 2 small children. They are my great-grandparents and I would appreciate any help finding information on them. Dominion Info: 36676 1883 152 26 1620 1 15.05.1883 16.05.1883 Tørris Braa g Arbeidsm m 26 Throndhjem Dell Rapids Dak Dominion Dampsk Hero Bill. bet. i Amerika