Art mac Flaitnia, or Art mac Flaithnia, King of Uí Fiachrach Aidhne (d.
[1] The succession to the kingship is uncertain the death of Fergal Aidne mac Artgaile in 696, a reflection of Aidhne's drastic reduction in status.
Art is recorded as having been killed in 772 along with his neighbor Aedh Ailghin, King of Ui Maine.
During the middle-decades of the century, the Déisi Tuisceart (later known as the Dál gCais) annexed what is now called County Clare into Munster, calling it Thomond.
It has remained a part of Munster to the present day.