Family Search Gudbrand (Gilbert)Pedersen

My grandfather, Asmund Pedersen & his brother Gudbrand(Gilbert) came to USA 4/6/05 on the ship United States leaving from Christiania (Kristiania, Norway). Gudbrand was sponsored by Uncle Olaf Pedersen and went to Long Island, NY. My grandfather moved to Argyle, WI. I am trying to find relatives of Gudbrand in the NY area, he married and had one child named Inga, I beleive. Their parents were named Peder & Fredrika from the Oslo area.