County Laois; Irish: Contae Laoise) is a county in Ireland. It is part of the Midlands Region and is also located in the province of Leinster, and was formerly known as Queen's County.
The modern county takes its name from Loígis, a medieval kingdom.
Laois County Council is the local authority for the county. The population of the county is 80,559, according to the 2011 census - 20% higher than it was in the 2006 census, which is the highest percentage population growth in the country.
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. Wikipedia