Art mac Flaitnia, or Art mac Flaithnia, King of Uí Fiachrach Aidhne (d. 772). 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 only one of two rulers of the kingdoms known from the 8th-century. Art is recorded as having been killed in 772 along with his neighbor Aedh Ailghin, King of Ui Maine. The Annals of the Four Masters claim they were slain.