Thanks for your responses. I am fairly new to this business so I appreciate the guidance. The reason I am looking for this marriage is when I search for the name 'Thomas Powell' in Norway on familysearch.com I get the result:
1. Thomas POWELL - Ancestral File
Gender: M Marriage: 31 Oct 1850 Skaare, Rogaland, Norway
When I click on the link it says this particular Thomas Powell was born in 1779, but nothing else about a marriage. I don't know if this is some sort of mistake??
My great grand father's marriage certificate indicates he was born in Norway and I am going down this path to prove/disprove the possible connection. My ggrandfather's name was also Thomas Powell.
It is possible there is no connection, but the names do fit with what my aunt can remember being told as a child, which, I guess sometimes, isn't all that reliable.
Thanks for your help,