3 brothers Taraldsen from Norway to New York

The brothers Tarald born 1854, Ludvig born 1858 and Soeren Bertinius born 1867 with the surname of Taraldsen (or may be Gramstad) lived in New York in 1897. They were born in Stavanger, Norway and their father was Johan Tobias Taraldsen Gramstad born 1834, and their mother was Anne Dorthea Olsen born 1833 in Stavanger. i can't find them in any shipping list, so now I will try to ask anyone out there if you know anything about these men and their families. Yours sincerely Bente in Norway