Conlon and its associated variants (O')Conlan and Connellan, are anglicised versions of a number of Irish names. O Connallain, from a diminutive of the personal name Conall, "strong as a wolf", originated in counties Galway and Roscommon. O Coinghiollain, whose derivation is unclear, arose in Co. Sligo. The third of the Irish originals, O Caoindealbhain, comes from caoin, "fair" or "comely" and dealbh, meaning "form", and is principally associated with the midlands and Co. Meath. This last name was also anglicised "Quinlan" or, in Munster, "Quinlivan". The most common anglicisation, "Conlon", is now distributed throughout Ireland, with particular concentrations in the original homelands of North Connacht and the midlands.