This William Sly is also my g-g-g grandfather, I am descended from his son John have
reams of info on this family, he was born in Co Wexford Ireland, (Fern) I believe Sarah (Doyle) family is buried in the Ferns Church, and Williams father also in the same Church. (I am fortunate to have record of the Ferns Church. Can verify William was drowned while inspecting his land in Tasmania in 1841, (story written by his son for the Mercery years latter I have a copy off).