DEANE:-- In Ireland Deane appears as O’Deane as well as Deane in the Fiants of Co. Kilkenny and Tipperary, so it is probable that the Deanes of that area were of dual origin i.e. de Denne and Ó Deagháin. This surname is derived from the Irish word for a dean. According to Woulfe, families bearing the surname Deane seem to have been originally O’Donnells and O’Gallaghers. Some Connacht Deanes were one of the ‘Tribes of Galway’ originally le den and said to be descendant of William Allen or Den who came from Bristol,England in the reign of Henry VI. Ever since there have been Deanes in Galway and Mayo. Development and History:-- In the 17th century Deane was numerous in Co. Kilkenny but it is rarely to be found there nowadays.