County Laois: History
=== Prehistoric ===
The first people in Laois were bands of hunters and gatherers who passed through the county about 8,500 years ago. They hunted in the forests that covered Laois and fished in its rivers, gathering nuts and berries to supplement their diets.
Next came Ireland's first farmers. These people of the Neolithic period (4000 to 2500 BC) cleared forests and planted crops. Their burial mounds remain in Clonaslee and Cuffsborough.
Starting around 2500 BC, the people of the Bronze Age lived in Laois. They produced weapons, tools, and golden objects. Visitors to the county can see a stone circle they left behind at Monamonry, as well as the remains of their hill forts at Clopook and Monelly. Skirk, near Borris-in-Ossory, has a Bronze Age standing stone and ring fort. The body of Cashel Man indicates that ritual killing took place around 2000 BC.
The next stage is known as the pre-Christian Celtic Iron Age. For the first time, iron appeared in Ireland, showing up in the weapons used by factions who fought bloody battles for control of the land. At Ballydavis, archaeologists have discovered ring barrows that date from this time period.
The county name derives from Loígis, of which the modern county is only a part. In the 11th century, its dynastic rulers adopted the surname Ua/Ó Mórdha. They claimed descent from a member of the Red Branch Knights.
By the first century AD, the western third of Laois was part of the Kingdom of Ossory. The eastern part was roughly divided into seven parts, which were ruled by the Seven Septs of Loígis:Ua/Ó Mórdha (O'More, O'Moore), O'Lalor, O'Doran, O'Dowling, O'Devoy (O'Deevy), O'Kelly and McEvoy.
When Ireland was Christianised, holy men and women founded religious communities in Loígis. St. Ciarán of Saighir (called "The Elder" to distinguish him from the younger St. Ciarán of Clonmacnoise) founded his monastic habitation in the western Slieve Bloom Mountains as the first bishop of Ossory, reputedly before St. Patrick. His mother Liadán had an early convent nearby at what is now Killyon. Between 550 and 600, St. Canice founded Aghaboe Abbey and St. Mochua founded a religious community at Timahoe. An early Christian community lived at Dun Masc or Masc's fort, on the Rock of Dunamase.
The Synod of Rathbreasail that established the Irish dioceses was held near Mountrath in 1111, moving the Church away from its monastic base. As religious orders with strong ties to Rome replaced older religious communities, the wooden buildings of the early Christian churches in Laois gave way to stone monasteries. The Augustinians and Dominicans established themselves at Aghaboe Abbey, while the Cistercians took over an older religious community at Abbeyleix. …