Vik Family

I am looking for Ole M. Vik and Severine ?. Ole M. was born in 1855 and Severine in 1851. I think they were married in Tronheim but not sure. They were married about 1867. According to the US census Ole M. left Norway in 1871 and Severine left in 1874. I think that Ole M.'s father was Ole O. so he may have been Olson or Olsen. I can't find any ship records for them and I don't have any information on their ancestry. If anyone can help it would be much appreciated. Thanks Lori Lauen