Right, I've got my family history material in front of me. I spoke too soon earlier about the relationship of Samuel Lafone to Mary Lafone Dawbarn -- she was his niece by marriage.
Mary Lafone Dawbarn (1.3.1814 Liverpool - 21.2.1866 Wisbech) was the second of nine children of John Dawbarn (7.7.1789 Liverpool - 12.8.1849 Wisbech) and Jane, née Ellison, otherwise Hurry (c1772 Litherland, Lancs - 18.7.1826). She first married Francis John Hurry (1778 Great Yarmouth - 1804 Liverpool) and had two daughters with him.
Jane's sister Mary Seacome Ellison (12.9.1775 Liverpool - 19.9.1812 Liverpool) was the first wife of Samuel Marchant Lafone (29.3.1770 Liverpool - 30.8.1856 West Derby). They married on 10.6.1794 at St Mary's, County Road, Walton on the Hill, Lancs. Samuel subsequently married Sarah Hurry (d. 22.2.1838), sister of Francis John Hurry, the first husband of Jane Ellison.
Mary and Jane had at least three other siblings. Their parents were Thomas Ellison, of whom I know nothing other than that he was an upholsterer when he got married, and Martha Seacome (1749 Liverpool - 29.1.1813). They married on 4.3.1771 at St Mary's aforesaid.
Martha Seacome's parents were John Seacome (1.7.1725 Liverpool - 18.3.1779) and Martha Ellison (1719 Lancs - 29.11.1783 Liverpool), married c.1748. As I say, I know nothing more about Thomas Ellison. It wouldn't surprise me if he was a relative of the latter Martha Ellison.
This is all rather confusing when written down like this. I can send you a report from Family Tree Maker if you're interested, which will give descendants and lines from siblings too, if you're interested -- please drop me a personal message if you'd like this.
How do you fit in? I'm always intrigued to know of new connections to the Dawbarns, as it's such an unusual name.