I had the wrong guy! UGH! Suggestions needed.

Soooo.... Two years into my Norwegian research and I realize, I have the wrong guy. I initially thought my Anton Andersen b. September 27th 1858 or 59, was the one listed in (ancestry and familysearch) Verdal at Valstadsvedjan. I began getting a sneaky suspicion he wasn't mine when I found a document stating that he had returned to Norway after being in the US for a few years and owned the farm Nordli. I am certain of the birth date...but not year as the family trail of info was unreliable- when it came to the year. His official death certificate and such have his date correct but the year varies between '58 and 59. My suspicion was fully solidified and my fears confirmed. Anton from Valstadsvedjan...and all his relatives before him, were not my people. This confirmation came when I found the out-migrating document (shared in another post) showed that my Helen (Anton's wife that I thought he met aboard the Bark Beta to Hawaii) left Asker in 1880 and the notation said she would be traveling with her boyfriend. The person listed beneath her on that parish entry was an Anton Andersen born in 1859 and bound for the Sandwhich Islands. They were leaving Asker within a couple of each other. So now I'm trying to confirm that this is my "real" Anton. Especially before I go tearing up that branch of the tree. But I'm having some difficulty. There are a few possibilities of other potential Anton's but pulling them together is difficult. I have an Anton born in Asker with that same b-day to an unmarried couple- Andreas Pedersen of Reistad and Oliva Frederiksdr of Skaugum. I have tried finding them on censuses, but could never find and Anton with either of them. Then I looked at all 5 God Parents and tried to look for him at their farms with them... It's a toughie. There are other potentials but these were my first likely ones... But I'm also thinking that Anton may hold another clue. Twins. My Anton and Helen had two sets so I figure there are likely more twins... my other lines are confirmed correct and there are NO twins anywhere. I'm thinking they must be from his line. There is an Anton with that date that is listed as a twin... but I've gotta look into that clue now. IF you are still with me on this long winded (i'm always verbose) post-- I could use some suggestions. I'm now finding that I'm becoming less organized and focused and scattered with trying to figure this out. And am systematically really to try this from a different approach. Still finding the digital archives a bit challenging, but thats mostly due to language. HELP! Please and Thank You!