Con Raoi directly ruled as Lord of Gnó Mhór, which was later divided into the civil parishes of Kilcummin and Killannin. Due to the power they wielded through their war galleys, the Chiefs of Clan Mac Con Raoi were traditionally considered to be, along with the Chiefs of Clans O'Malley, O'Dowd, and O'Flaherty, the Sea Kings of Connacht. The nearby kingdom of Gnó Beag was ruled by the Chief of the Name of Clan Ó hÉanaí (usually anglicised as Heaney or Heeney). The (Kealy) clan were the rulers of West Connemara. Like the Chiefs of Clan clan, the Chiefs of Clan (Conneely) also claimed descent from the . During the early 13th-century, however, all four clans were displaced and subjugated by the Chiefs of Clan , who had been driven west from into by the Mac William Uachtar branch of the House of Burgh, during the Hiberno-Norman invasion of . According to Irish-American historian Bridget Connelly, "By the thirteenth century, the original inhabitants, the clans Conneely, Ó Cadhain, Ó Folan, and MacConroy, had been steadily driven westward from the Moycullen area to the seacoast between Moyrus and the Killaries. And by 1586, with the signing of the Articles of the Composition of Connacht that made Morrough O'Flaherty landlord over all in the name of Queen Elizabeth I, the MacConneelys and Ó Folans had sunk beneath the list of chieftains whose names appeared on the document. The Articles deprived all the original Irish clan chieftains not only of their title but also all of the rents, dues, and tribal rights they had possessed under Irish law." During the 16th-century, however, legendary local pirate queen Grace O'Malley is on record as having said, with regard to her followers, "Go mb'fhearr léi lán loinge de chlann Chonraoi agus de chlann Mhic an Fhailí ná lán loinge d'ór" (that she would rather have a shipload of Conroys and MacAnallys than a shipload of gold). One of the last Chiefs of Clan O'Flaherty and Lord of Iar Connacht was the 17th-century historian Ruaidhrí Ó Flaithbheartaigh, who lost the greater part of his ancestral lands during the Cromwellian confiscations of the 1650s. After being dispossessed, Ó Flaithbheartaigh settled near Spiddal wrote a book of Irish history in New Latin titled Ogygia, which was published in 1685 as Ogygia: seu Rerum Hibernicarum Chronologia & etc., in 1793 it was translated into English by Rev. James Hely, as