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Click and drag the map above. Use the buttons to zoom in and out.
The old kingdoms are indicated by blue lettering. The baronies (also showing older territories) are in white.
Surnames, in their commonly used forms, are shown in black. Each name has a long association with the locality shown, during either the medieval period or in more recent times. In some cases different septs using the same surname arose in widely different areas. In other cases migration due to war dispersed them.

Tipperary is a large county that formed the north-eastern part of Mumu, later Munster. Cashel, seat of the Eoganacht kings of Munster, lies in the middle of the county. The O'Carrolls and the O'Fogartys ruled the north and south of the Kingdom of Eile. Ormonde was ruled by the O'Kennedys and the O'Mearas and later the Norman Butlers. The Ryans or Mulryans were Lords of Owney and Arra. With the coming of the Normans the Burkes displaced the Quirkes and the O'Sullivans (who moved to Kerry) in the southern parts.