Noun
tuath (plural tuaths or tuatha)
(historical) A tribe or group of people in Ireland, having a loose voluntary system of governance entered into through contracts by all members.
A tuath was an autonomous group of people of independent political jurisdiction under a rí túaithe, that is, a local petty king. Source: Internet
Commenting on the "kings" of tuaths, Rothbard states: The king was elected by the tuath from within a royal kin-group (the derbfine), which carried the hereditary priestly function. Source: Internet
Politically, however, the king had strictly limited functions: he was the military leader of the tuath, and he presided over the tuath assemblies. Source: Internet