Hi Shasitty,
My name is Steve Lovell and I have found James Stevenson and Isabella Square in my family tree: I am a descendant of their daughter - the union of Isabella Stevenson and John MacGilchrist both born circa 1827.
This is a cold thread, I notice, so I feel as if I am leaving a message in a bottle to float across the ocean of time; if the note reaches your shore I'd be pleased to learn anything you might tell.
Ste