Thanks alys, you're probably correct. As you say, Janet's brother was Mathew - I'd forgotten that. Too keen to find meaning from the name elsewhere.

I'm intrigued by your reference to "Janet's grandfather Mathew Smellie." Was that simply supposition on your part, or have I missed something. So far, I don't think I've traced Janet's mother's parents. If it's a guess on your part, it's a good one that I've never considered before. In my defence, Smellie is a line I have never followed through fully yet.
.....and yes, albeit the 'wrong' thread, I knew exactly what you were talking about.

For other's benefit, I have another, more specific, Forrest thread on the go here....
http://www.rootschat.com/forum/index.php?topic=678242.msg5229340#msg5229340