The Septs of Ui Fiachrach Aidhne Septs of the Uí Fiachrach Aidhne Hynes/Hines/Hinds/O'Heyne (Ó hEidhin) Descended from Eidhin, son of Cleireach (see O'Cleary, below), who lived in the 9th century, the O'Heynes became the chief family of the Cineal Guaire, and shared the Lordship of Aidhne with the O'Shaughnessys. They had a number of castles, the most famous being Dunguaire Castle, near Kinvara. O'Shaughnessy (Ó Seachnasaigh) The O'Shaughnessys were named for Seachnasach, chief of the sept in 1100. Sharing the Lordship of Aidhne with the O'Heynes, their main stronghold was in Gort. Descended from Guaire Aidhne's son, Aoedh, the O'Shaughnessys' territory was called Kinel Aedha na Echtghe. They were associated with the Slieve Aughty (Sliabh Echtghe) mountains and lived in the eastern half of the diocese of Kilmacduagh. O'Shaughnessy chapel may be found at the monastery of Kilmacduagh, where many O'Shaughnessys were buried. In 1533 AD, Dermot O'Shaughnessy exchanged his traditional Gaelic title for an English knighthood granted by King Henry VIII, and became Sir Dermot. He was succeeded by his son, Sir Roger. After Roger's death in 1569, his brother and sons fought each other over the inheritance. Sir Roger O'Shaughnessy fought on the side of the deposed English King James II against William of Orange at the Battle of the Boyne in 1690, after which the O'Shaughnessy lands were confiscated by the English. Later attempts to reclaim the property were ultimately unsuccessful. (O)Cleary/(O)Clery/Clarke (Ó Cleirigh) One of the oldest surnames in Europe, the O'Clearys are descended from Cleirigh of Connacht, born c. 820, grandson of Commascach, who was great-grandson of King Feargal, son of Artgal, who was son of King Guaire Aidhne. His sons were Eidhin (ancestor of the O'Heynes, above) and Maelfavail. Maelfavail's son, Tighernach Ua Cleirigh, was Lord of Aidhne and the first to use the name, and died in 916 AD. His brother, Flann Ua Cleirigh, became Lord in 920 and was killed by men of Munster in 950 AD. His son was Comhaltan and was succeeded in 976 by Muireadhach Ua Clerigh. Comhaltan's son, Giolla Ceallaigh O'Clery, was ancestor of the Kilkellys (see below). The last O'Cleary Lord of Aidhne was Braon O'Clery, who died in 1033. Originally the chief family of the Cineal Guaire, they lost power and after the Anglo-Norman invasion they were forced out of Aidhne, and settled in Mayo, Kilkenny and Cavan. The Mayo branch settled in Tirawley, and from there to Donegal and Derry, where one intermarried with O'Scingin and became ollamh to the O'Donnells, who granted them land. Their chief seat became the castle of Kilbarron, near Ballyshannon. Their name means "clerk", and many O'Clearys were noted clerks, most famous for compiling The Annals of the Four Masters. Their arms are: Or, three nettle leaves vert. Magillikelly/Gilkelly/Kilkelly/Killikelly/Kelly (Mac Giolla Ceallaigh) According to O'Hart, there were two branches of this name in Aidhne, one descended from a Giolla Ceallaigh of O'Heyne stock, and whose arms are very similar to the O'Shaughnessys'. The other descended from Giolla Ceallaigh O'Clery (see O'Cleary, above), and their arms are described by O'Hart as being identical to the O'Clearys'. Their name means "follower of St. Cellach". Giolla Ceallaigh O'Clery slew the son of the chief of South Connaught in battle in 992 and in 998 he slew Diarmuid, son of the chief of the O'Maddens, but in 1003 he was killed by Tadhg Mor O'Kelley in battle. Their traditional territory was in Clanrickarde at the base of Galway Bay, and their principle seat was the Castle of Cloghballymore in Ballindereen, in the Parish of Killeenavarra. Brian Reoghe MacKilkelly, Lord of Cloghballymore, lived in this castle. Although some are now called "Kelly", they are not related to the various other Kelly septs. Cahill (Ó Cathail) The Cahills' territory was Co. Galway, close to Co. Clare, and were chiefs of Kinelea (Aughty). This Cahill sept is descended from Cathail, son of Ogan, who was a descendant of Guaire Aidhne's uncle, Aodh. The name Cathail comes from catu-ualos, which means "powerful in battle". Flann O'Cahil was reported martyred in 938 AD. They were displaced by their relatives, the O'Shaughnessys, in the 13th century, when many moved to Munster. The last O'Cahill chieftain of Kinelea, Giolla Mochoine O'Cathail, "Lord of Kinel Aodh, East and West", was slain by Giolla na Naomb Crom O'Shaughnessy in 1222 AD. Members of this sept are still found in Co. Clare. Their arms are given by O'Hart as: Gyronny of six ar. and vert. as many fleurs-de-lis counter changed. Crest: A lion's paw holding a scimitar ppr. O'Cahan/Kane/Keane (Ó Cathain) This sept were recorded as chiefs of Cineal Sedna in County Galway. The poem The Land of Glorious Aidhne by Shane Mor O'Dubhagain (as printed in "White Sheeted Fort"), states: Over Kinel Setna of rods Rules O'Cahan, brave their battle They possess the profits of the shore and flood  The O'Cahans of Aidhne are not related to the more well-known O'Cahans of Derry in the North. O'Scanlan (Ó Scannláin) Said to be closely related to the O'Shaughnessys in South Galway and Clare, a branch moved to County Cork and became erenaghs of Cloyne. O'Diffely (Ó Duibhgiolla) Chiefs of Kinel Kingawna (Cineal-Cinngamhna). MacFiachra Chiefs of Youths of Beathra (Oga Peathra). O'Moyna/Mahon/Maughan/Mogan/Mohan (Ó Maghna, Ó Mochain) Chiefs of Koenry (Ceanridhe). Descended from Guaire's son Nar, they were for a short period lords of Aidhne. There was also a sept of the same name found in the barony of Coolavin Co. Sligo.