I just wondered if you had a Patrick in your tree?
It is a very long shot because Patrick my gt grandfather (born about 1846, in "Ireland") ie is almost impossible to find unless by a fluke.
He appears to have gone to Loanhead, near Edinburgh and married Annie Scott also from "Ireland" when he was c 18 and she was c 13. There are Scott and Davy families in both Co Sligo and Co Down but they could have come from anywhere - possibly a run away marriage? They moved to Durham where their three daughters were born and died there - alas Patrick before the 1911 census and by then Annie claimed to have been born in Durham. (There is no record here that I can find that ties up with her birth, there).
Best wishes, Liz