Mícheál Ó Cléirigh from
Ballyshannon, who was assisted by, among others,
Cú Choigcríche Ó Cléirigh,
Fearfeasa Ó Maol Chonaire and
Cú Choigríche Ó Duibhgeannáin The O’Dohertys are named after
Dochartach (fl. 10th century), a member of the
Cenél Conaill dynasty which in medieval Irish genealogy traced itself to
Niall of the Nine Hostages (see
Uí Néill). The O’Doherty clan and family name is one of the most ancient in Europe. The clan traces its pedigree through history, pre-history and mythology to the second millennium BC. Their story was transmitted orally for thousands of years and was first put in writing by Christian monks between the 6th and 11th centuries AD. The principal written sources are manuscripts, genealogies, king-lists, chronologies and poems including: • The
Lebor Gabala Érenn (the Book of the Taking of Ireland, usually known in English as
The Book of Invasions or
The Book of Conquests, and in Modern Irish as
Leabhar Gabhála Éireann or
Leabhar Gabhála na hÉireann) was compiled in
Irish in the 11th century AD. It is now considered primarily myth rather than history by most scholars. • The
Annals of Ulster, spanning the years from AD 431 to AD 1540. Written in
Irish and
Latin. • The
Annals of the Four Masters (Irish:
Annála na gCeithre Máistrí), a.k.a. the Annals of the Kingdom of Ireland (Irish: Annála Ríoghachta Éireann) were compiled between 1632 and 1636. Written in Irish. • The
Foras Feasa ar Éirinn (English:
Foundation of Knowledge on Ireland) chronology was compiled by
Geoffrey Keating (Irish:
Seathrún Céitinn) in 1634. Written in Irish. According to these sources, the O’Dohertys are descended from
Breogán, the famous Celtic King of
Galicia in Spain in the second millennium BC. His grandson Galam, famously known as
Míl Espáine (Irish: Soldier of Spain) a.k.a. Milesius, gave his name to the
Milesians who are said to have been the first Celtic (or Gaelic) peoples of Ireland). Breogan's great-grandson
Érimón was one of the Celtic chieftains who conquered Ireland from the pre-Celtic neolithic
Tuatha Dé Danann (Irish:
People of the Goddess Danu), and was the first Milesian King of Ireland. Érimón was King of Ireland from c. 1700 – 1684 BC according to the
Annals of the Four Masters, although the
Foras Feasa ar Éirinn calculates his reign from 1287 to 1272 BC. The O’Doherty clan traces its descent from Erimon through some 150 generations of his descendants including 54 kings and 26 princes. Notable among Erimon's descendants are:
Eochu Feidlech a.k.a.
Eochaid (i.e. the enduring) was High King of Ireland in the 4th century BC and the father of
Queen Medb or Maeve the great warrior Queen of Connacht who started the famous
Táin Bó Cúailnge (English: Cattle Raid of Cooley) to steal Ulster's prize stud bull, opposed by the teenage Ulster hero
Cú Chulainn.
Túathal Techtmar (1st century BC), high King of Ireland and ancestor of the
O’Neill and
Connachta dynasties.
Conn of the Hundred Battles (Irish:
Conn Cétchathach), High King of Ireland in the 2nd century AD. He was the ancestor of the
Connachta and, through his descendant
Niall Noígiallach, the Uí Néill dynasties, which dominated Ireland in the early Middle Ages. Conn appointed the legendary hero
Finn MacCool (Irish:
Fionn mac Cumhaill) the last leader of the
Fianna, the small, semi-independent warrior bands in Irish mythology.
Niall of the Nine Hostages (Irish:
Niall Noígíallach), King of the Northern half of Ireland from c. 368–395 AD The O’Neill dynasty which he founded were High Kings of Ireland for 400 years, and ruled their own
Kingdom of Aileach for 8 centuries from 465 to 1283. His grandson
Saint Columba (Irish:
Colum Cillle) (7 December 521 – 9 June 597) introduced Christianity to what is today Scotland at the start of the
Hiberno-Scottish mission. He founded the important
Abbey of Iona on the Scottish island of the same name, which became a dominant religious and political institution in the region for centuries. He is the Patron Saint of
Derry. The O’Neill dynasty includes the
O’Donnell Kings, Princes and Lords of
Tyrconnell, and the O’Doherty Princes or Lords of
Inishowen in County Donegal. These titles were given through the traditional proto-democratic system of election by
tanistry (the form of
elective monarchy based on patrilineal relationship that characterised the succession of the ancient Gaelic clans under
Brehon law. However, after the
Anglo-Norman and English conquests of Ireland, the aristocratic titles of Irish Kings and clan chieftains were designated by the foreign system of
primogeniture through which the first-born "legitimate" son would automatically inherit his father's title and or property (which transmitting and concentrating power and wealth to men with no regard of their merit or ability).
King Conall Gulban (died c. 464 AD) was the son of Niall Naoigiallach. He is the eponymous ancestor of the
Cenél Conaill, and founded and gave his name to the kingdom of
Tír Chonaill, comprising much of what is now
County Donegal in
Ulster. He is important in the history of Irish Christianity as he was the first Gaelic nobleman baptised by
St. Patrick, thus opening the way for the conversion of the nobility in Ireland. The Kingdom of Tyrconnell was part of the
Kingdom of Aileach until 1185 AD.
Donagh Dochartach, who lived in the 9th century AD, gave his name to the O'Doherty family. The later chiefs of the clan, elected by tanistry under the
Brehon Laws, became the Lords of
Inishowen after migrating from their original territory in the Laggan valley area of present-day Donegal, into the vacuum left by the end of
Meic Lochlainn rule in
Inishowen, the northernmost peninsula of the island of Ireland.
Conor-an-Einigh O Dochartaigh (1359–1413) was the first of the clan to settle in
Inishowen, namely at Castleross in the parish of Desertegney (Irish:
Díseart Einigh, i.e. the refuge or hiding place of Einigh) which is named after him. Other members of the clan subsequently born in Desertagny include a brother of the rebel
Sir Cahir O’Doherty (1587–1608) and the ancestors of the politician
Joseph O’Doherty who lived a few miles further south in the same parish at Gortyarrigan. == Modern history ==