Hi Florence, Patrick Thomas is my 7th G-Grandfather through Jesse Thomas and his son, John. According to charts my G-Great Aunt made, Jesse Thomas and Sarah Muncey had not 7, but 9 children:
1) Mary (b 8/12/1763)
2) Anna (b 9/27/1765)
3) Fanny (b 1767)
4) David (b 4/29/1769)
5) Jesse (b 5/28/1771)
6) Nathaniel (b 9/9/1773)
7) John (my 5th G-Grandfather, b 5/31/1775, d 5/31/1837 in New Garden, Columbiana County, Ohio)
8) Sarah (b 2/8/1777)
9) Benjamin (b 8/3/1778)
And in case you don't have it, Patrick's 7 children were:
1) Jesse (b 1742, d 1804 in Smithfield, Jefferson County, Ohio)
4) William or Willam
I'm delighted in the fact that I can answer your request as to who exactly Patrick Thomas was. He was indeed of the "British Isles" and born in 1709. Family lore had always held that he was an indentured servant, and a few years ago google not only verified that legend, but gave more detail to it than I would have ever believed possible.
Read pages 440-452:http://books.google.com/books?id=GwEQAAAAYAAJ&printsec=f...
To understand why his case, and more specifically his extradition, involved letters between colonial governors read:http://en.wikipedia.org/wiki/Cresap%27s_War
Patrick died in 1748 at the age of 39 in Kent County Delaware.
As for the Muncey line though, I don't have any information past Sarah Muncey's parents being Nathaniel Muncey (son of Frances) and Mary Bush. Do you have more information pertaining to those folks?