[5][6] According to the Annals of the Four Masters, the battle of Ahascragh took place in 1307 between English forces and the local O'Kelly Chieftains.

[4] Clonbrock Castle, near Ahascragh, is a medieval tower house which dates to the late 15th century and is traditionally associated with the O'Kelly family.

In the 1830s, at the time of the first Ordnance Survey, Ross Mahon was the proprietor of several townlands in the parish of Ahascragh.

The Mahon estate was one of the principal lessors in the parish of Grange, barony of Loughrea at the time of Griffith's Valuation (1848–1864).

In 1906, Sir William Mahon held over 4.9 square kilometres (1,200 acres) of untenanted land in the Ahascragh area.

The lands, house and demesne at Cahir, barony of Clonmacnowen, owned by James Dillon, were offered for sale in the Encumbered Estates Court in July 1854.

[17] Ahascragh-Fohenagh GAA, the local Gaelic Athletic Association club, is based in nearby Fohenagh.