Gabrielson and Gade

I am in search of records of the E/Immigration of Anton Christian Gabrielson and Othelia Theodora Gade. He was born 2 May 1857 in Hattfgald-dalen, Norway and she was born 5 July 1857 in Sor-Varanger, Norway. According to his obit, he came to the US in 1883. If that were true, then it would have been before Feb 25 because his youngest daughter was born in MI. His parents are Gabriel Johan Jeremiassen and Anne Maria Jacobsdatter. Her parents are Thron Fredriksen GADE and Ovedia Fredrikka NORAGER. Any and all help is appreciated! Thank you! Christie