Overview
Connacht or Connaught ( ; or ), is one of the four provinces of Ireland, in the west of Ireland. Until the ninth century it consisted of several independent major Gaelic kingdoms (Uí Fiachrach, Uí Briúin, Uí Maine, Conmhaícne, and Delbhna).
Between the reigns of Conchobar mac Taidg Mór (died 882) and his descendant, Aedh mac Ruaidri Ó Conchobair (reigned 1228–33), it became a kingdom under the rule of the Uí Briúin Aí dynasty, whose ruling sept adopted the surname Ua Conchobair. At its greatest extent, it incorporated the often independent Kingdom of Breifne, as well as vassalage from the lordships of western Mide and west Leinster. Two of its greatest kings, Tairrdelbach Ua Conchobair (1088–1156) and his son Ruaidri Ua Conchobair (c. 1115–1198) greatly expanded the kingdom's dominance, so much so that both became High King of Ireland.
The Kingdom of Connacht collapsed in the 1230s because of civil war within the royal dynasty, which enabled widespread Hiberno-Norman settlement under Richard Mór de Burgh, 1st Baron of Connaught, and his successors. The Norman colony in Connacht shrank from c. 1300 to c. 1360, with events such as the 1307 battle of Ahascragh (see Donnchad Muimnech Ó Cellaigh), the 1316 Second Battle of Athenry and the murder in June 1333 of William Donn de Burgh, 3rd Earl of Ulster, all leading to Gaelic resurgence and colonial withdrawal to towns such as Ballinrobe, Loughrea, Athenry, and Galway. Well into the 16th century, kingdoms such as Uí Maine and Tír Fhíacrach Múaidhe remained beyond English control, while many Norman families such as de Burgh, de Bermingham, de Exeter, de Staunton, became entirely Gaelicised. Only in the late 1500s, during the Tudor conquest of Ireland, was Connacht shired into its present counties.
Connacht's population was 1,418,859 in 1841. Then came the Great Famine of the 1840s, which began a 120-year decline to under 400,000. The province has a population of just under 590,000 according to the preliminary results of the 2022 census.
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