Peter Christoffersen Thanem family

Hi, First I would like to thank anyone who can help me find a relative who is looking for family information. I know this is the place to find help from the experts. Peter Christoffersen Thanem immigrated to the United States. From going through the farm name " Thanem " I narrowed the search to Sor Trondelag, Norway. All that was known about Peter in the United States is from census records. It states that his wife's name was Bertha and that she was born about 1854 and Peter in 1856. They had a son named Claus born about 1889. From looking at the records from Klaebo I found a Peter Kristoffersen born 1-1-1856 and a Beret I believe in May 1854. Their marriage took place on July 25, 1879. Peter's parent were listed as Kristoffer Madsen and Marith Pedersdt. and Bereth's as Jorgen Pedersen and looks like Kjersten Eriksdatter. Here is where I am getting a little confused! From the Emigration records in 1860 it appears they left the parish and went to Strinden. I found them in the Strinden records and found the family in the 1865 census there. They are living on a farm by the name of Bjerkaas and the local parish name is Bratsberg. In the 1865 census I believe I found Beret Jorgensdatter in the census in Klaebo on the farm Thanemstro, her father being Jorgen Peders. Here is where I am confused. In the 1865 Census in Klaebo there is a Peter Christofferson on the Grindstadplads farm, age 11, with the a Nils Pedersen and other Pedersen's. I am trying to find the correct families, and have been tracing Peter's parents as Christoffer Madsen and Marith Pedersen. Am I following the right direction? I wasn't too confused until the other Peter showed up living at the Klaebo census. Any help would be appreciated as I don't want to guess and give my relative false information. There are enough family trees online where guessing is done. Thank you again for any help you can give me.