The difference in age between Colin and Janet, make me wonder if there was a previous marriage for Colin. There is a possible on SP.
What does it say on Colin and Janets marriage record? Anything about it being a second marriage, or where he was from?
Morvern1805 - John1808 - Mary1812 - Isobel1814 - Colin1817 - Isobel1819 - ColinKilmallie1826 - James