Children of Ole Pedersen Hanevold - Vestre Toten

I have hit a road-block and hoping someone can guide me as to next steps - I am working to complete the children of Ole; and have run out of known options - The children are: Ole Olsen Hanevold - Birth 12 June 1829 in Presterud, Kolbu, Vestre Toten, Oppland, Norway. I have confirmed his birth, baptism, and confirmation - after that nothing. I have searched Digitalarkivet censuses, marriages, deaths, with no real success; A couple of leads that went nowhere. Marte Maria Olsdtr Hanevold - Birth 7 Apr 1835 in Hoel, Kolbu, Vestre Toten, Oppland, Norway. As with Ole, I have confirmed birth, baptism and confirmation. Also located an out-migrant record in the church records - in 1855 she moves to Christiana. From there, she vanishes. I suspect they both emigrated to America with the rest of their brothers and sisters; however, have not been able to substantiate this. Is there other alternatives to searching passenger records? Thanks for any helpful hints!