Thanks all, you were on the right track and helped lots and lots.  I tracked the Moffat's right back to Samuel Moffat (1849) and Ellen Davenport (1849) and got stumped again.  I could go further back with Ellen but became unstuck with Samuel.  My Dad always told me there was a Scottish bloodline but I can't seem to find it.  I came across a Samuel from Congleton who was originally from Ireland and I wondered if there was a connection there somewhere?