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.

In Gaelic times County Offaly formed part of the kingdom of Ui Failge, with the southern portion falling into Eile or Ely, ruled by the O'Carrolls. The northern portion was ruled by the O'Connor Falys, the Molloys and the MacCoughlans. The O'Dempseys were also  powerful in Clanmalier. The O'Meaghers held territory in the south. Offaly was assembled from these kingdoms in Tudor times and thereafter known as King's County.

Start
History Map
Virtual Tour

New Search
Note: Close the popup window before starting a new search.