Hello
The Leighs are my family. Levi was son of John and Mary as you have it, Valda. Brothers were John and Henry, and a sister who died age 18 called Elizabeth. Parents were John Leighs 1771-1848 and Mary unknown 1772-1824, grandparents were, John Leighs 1729-1814 and Elizabeth nee Hobson.
Levi seems to have been a bit of a bad boy and his history is confusing as he did appear to change his name to Harold.
The Lord Byron so-called link is a red herring, I think, as I have never found any such connection and the dates, places and social levels do not add up in any way. I would be happy to be proved wrong, however.
Lord Byron's family is well documented. Wikipedia has a lot on him, as well as there are numerous published biographies. In 1804 he was still at school at Harrow after attending Dulwich and Aberdeen Grammar School.
I would need a great deal of convincing that there is any link with him and the Quaker family of the Leighs of Staffordshire who moved to Lambeth and then to Guildford and Surrey.
My 2nd great grandfather was Levi Leigh's brother, Henry Leighs 1809.
Vicwinann