Fianna, and, according to Seathrún Céitinn, originally 25 dioceses in the country.

Uí Corra

[I] Lochan, Emne, and Silvester were three heroes of the Uí Corra who went on a voyage among strange and exotic islands. Scholars suggest that the composition of this story seems to date from the sixth century a.d. and it was written for Christian moral edification.

Uigreann

[I] Sometimes Uirgriu. He was slain by Fionn Mac Cumhail, and his five sons sought vengeance on Fionn, each casting a spear at him, so it was said that all five killed him. It was also significant that Fionn was one of the five masters of every art, the numeral having special significance.

Uillin

[I] A grandson of Nuada who is said to have drowned Manannán Mac Lir in Loch Corrib and given his name to Moycullin, Co. Galway.

Uisneach

[I] The name is often used as a synonym for Usna. There is also the Hill of Uisneach (formerly Balor’s Hill), which was thought to be the exact centre of the country, “the navel of Ireland,” where the great Stone of Divisions (Aill na Mirenn) stood, marking the joining of the five provinces of Ireland. The actual site is near Ráthconrath, Co. Westmeath. Tuathal Teachtmhair built one of his four great palaces here, and one of the three major festivals of Ireland was held here. St. Patrick was said to have cursed the stones here, while Geoffrey of Monmouth claims that Stonehenge, in Britain, was built by Merlin, who took the stones from “Mount Killarus,” which is identified as Uisneach.

Ulaid

[I] Dative form Ulaidh. Ulster. The ancient province and kingdom covers approximately the same geographical boundaries as the modern province, though this province must not be confused with the political province of Northern Ireland, which includes only six out of the nine Ulster counties. These six counties (Antrim, Armagh, Down, Derry, Fermanagh, and Tyrone) were partitioned from the rest of Ulster and Ireland in 1921. Cos. Cavan, Monaghan, and Donegal also form part of the province of Ulster. Rudraidhe, son of Partholón, was said to have founded the royal house of Ulster, and the people were sometimes known as Clan Rudraidhe and as Rudricans. The capital was Emain Macha (Navan), two miles west of Armagh. The heroes of Ulster are more widely known than those of the other provinces because of the