numerous: Belfast, Derry, Dublin, Cork etc. See Woods.
Very numerous: all areas, mainly Ulster. The name is English but it may stand for: Mac Giolla Choille, Mac Conchoille, Ó Caoilte, Ó Cuill, Mac Uilliméid. The first two belong to Ulster, the third and fourth to Munster and the last to the Midlands. However a substantial number of Woods are of English origin. SI.