Moses McCann, Patrick McCann Bridget or Biddy Kerins.

I am looking for information on my ancestor, Moses McCann born about 1840 in Ireland. His parents were Patrick McCann and Bridget Kerins. I have found a marriage record for two people with those names in Achonry, but I am not sure that this is acturllly his parent's record, although it is the only marriage record that I have found for people with those names. I would appreciate any information that I can get on them. Thank you!