Hi Lyn,
James Threlfall b. 1795 was a younger brother of George Threlfall who was my late wife's Gt Gt Gt Grandfather. You obviously share a common ancestor, father of James, George and 10 more, that is Thomas Threlfull christened 27 Sep 1759 in Kirkham, Lancashire who married Elizabeth Jackson 12 Sep 1780 in Eccleston by Chorley, Lancashire.
Best Wishes,
Brian Taylor

Location Nottingham, UK