O'Halloran family genealogy
Lords of Clan Fergail, County Galway
Arms: Gu. a horse pass. ar. saddled and bridled ppr. on a chief of the second three mullets az. Crest: A lizard or. Motto: Clan Fergail abu.
AONGUS (or Æneas), a brother of Duach Galach who is No. 88 on the (No. 1) "O'Connor" (Kings of Connaught) pedigree, was the ancestor of O'h-Allmhurain; anglicised O'Halloran.[1]
88. Aongus: son of Brian.
89. Mortogh: his son.
90. Allmhuran ("allmhuire:" Irish, importation; "an," one who): his son; a quo O'h-Allmhurain.
91. Fergallach: his son.
92. Cucolle: his son.
93. Aodh (or Hugh): his son.
94. Dermod: his son.
95. Connor Chatha-Luireach: his son.
96. Donall: his son.
97. Teige, the Strong: his son.
98. Fergal: his son; a quo Clan Fergail.
99. Hugh: his son.
100. Connor: his son.
101. Giolla-Sdefain, of the Plunder: his son.
102. Mulroona: his son.
103. Donall: his son.
104. David: his son.
105. Awley: his son.
106. Teige: his son.
107. Giolla-Chriost: his son.
108. Donall: his son.
109. Seonac: his son.
110. Dabhaic: his son.
Notes
[1] O'Halloran. This family were, as the name implies, "importers" of Wine; and were lords of Clan Fergail, a district in which Galway town is situate; and had their castle at Barna, close to the sea-side, about three miles west of Galway. The MS. Vol. H. 2. 17, in the Library of Trinity College, Dublin, states that "O'Halloran is the chief of the twenty-four townlands of Clan Fergail; and of these are the O'Antuiles and O'Fergus of Roscam." That statement refers to the twelfth century. These twenty-four townlands of Clan Fergail lay east of the river Gallimh (or "Galway.") The name "Clan Fergail" is now obsolete; but "Roscam," on which are the remains of a round-tower, is still well known. It lies about three miles S. E. of Galway. In the 13th century the O'Hallorans were dispossessed of their ancient inheritance of Clan Fergail, by the De Burgos; and were obliged to emigrate, with the O'Flahertys, to Iar (or West) Connaught, where they built the castle of O'Hery in Gnomore; and also, according to tradition, the castle of Rinvile in Northern Connemara. O'Flaherty, in his Ogygia, claims for the House of Clan Fergail the celebrated Saint Finbar of Cork. According to the Chronicles of the Wars of Thomond, at A.D. 1309, there was another family of the O'Hallorans in Thomond, descended from the stock of the O'Briens and other Dalcassians in Munster.—See HARDIMAN'S West Connaught.