Tharald Tharaldsen

Searching for information. This is my husband's biological father. According to an application for naturalization, ship log, other things he filled out and a death certificate, this is what I know. Born September 6, 1892 in Nedinis.also the name Isor or Risor is added on another document. He sailed on the SS Noruega in October 1913. He listed the contact person in Norway as Marie Tharaldsen. His death certificate in 1946 in a TB hospital gave his parents names as Oleson and Anna Marie Tharaldsen. Now I don't know where to look for the next step. Thanks