Hi, In our family we have a James Allen b:1763 d:30 Nov 1822. I know the dob is different, but ours married Anne Wilson (b:8 Aug 1773 d:29 Oct 1848)in Donegall,Ireland. They were said to have moved to Smith Co.,TN between 1806-1810. There is a Margaret Allen b:May 1795 d:30 Oct 1831 Buried next to them (in Horseshoe Bend).I have assumed she was a sister to our Jane Allen Belk (also buried there) daughter of James and Anne Allen. I don't have much more info, but if this sounds about right I might have someone who can help. His family is the son of James and Anne Allen, Jane's brother, possibly your Margaret's siblings.