Name: Gilichrist Gillechriosd MacLachlan, 1st. Chief of Clan MacLachlan
Born: 1156 in Loch Fyne, Argyll, Scotland
Married: 1176 in Argyll, Scotland to daughter of Lachlan, granddaughter of Rorie
Children: (2)
Margaret MacLachlan (MacDougall)
Gilpatrick MacGilchrist MacLachlan, 2nd. Chief of Clan MacLachlan
Died: after 1186 in Argyll, Scotland (after his last child was born)
Buried: after 1186 in Kilmorie Chapel, Argyll, Scotland
Gilchrist was the grandson of Aodh Alainn O’Neill, son of Dunsleve. He married the daughter of Lachlan and granddaughter of Rorie.
In the 6th century warriors from Ireland founded the Ulster-Scottish kingdom of Dalriada and called that part of the West Coast of Scotland, Earra Gael (Argyll), “the land of the Gael.”Then in 563, St. Columba established himself on Iona. It is reputed that MacLochlainns have been in Argyll since that time.
About 1038, Anrothan O’Neill, resigned as King of Aileach in favor of his brother and moved to Kintyre where he married a princess of a local king; she brought as a dowry the lands of Cowal which is the peninsula lying between Loch Fyne, the Firth of Clyde and Loch Long, and also the lands of Knapdale which lies on the western side of Loch Fyne. From old Gaelic manuscripts, the family MacLachlan of MacLachlan can claim descent from Anrothan and the Kings of Aileach and High Kings of Ireland.
The MacLochlains of Donegal, Kings of Aileach, and the O’Neills, Lords of Tyrone, both descended from the legendary High King Niall Mor bitterly contested for supremacy in the north of Ireland, from the eleventh to the thirteenth centuries.
In 1241 Brian O’Neill, backed by the Norman Earl of Ulster and by the O’Donnells triumphed in battle and slaughtered King Domnhall MacLochlainn with ten of his immediate family, his chieftains and most of the adult MacLochlainn males; the MacLochlainns, for centuries Kings of Aileach and High Kings of Ireland, never again challenged their kinsmen the O’Neills for supremacy.
Clan MacLachlan, also known as Clan Lachlan, Clann Lachainn (Argyll), and Clann Lachlainn, is a Highland Scottish clan that historically centred on the lands of Strathlachlan (Srath Lachainn “Valley of Lachlan”) on Loch Fyne, Argyll on the west coast of Scotland. The clan claims descent from Lachlan Mor, who lived on Loch Fyne in the 13th century, and who has left his name upon the countryside he once controlled: places such as Strathlachlan, Castle Lachlan and Lachlan Bay.
source: Wikipedia
Tradition gives Lachlan Mor a descent from an Irish prince of the O’Neill dynasty, Ánrothán Ua Néill, son of Áed, son of Flaithbertach Ua Néill, King of Ailech and Cenél nEógain, died 1036. Clan MacLachlan has been associated with other clans, such as Clan Lamont, Clan Ewen of Otter, Clan MacNeil of Barra, and the MacSweens: as all claim descent from Anrothan O’Neill who left Ireland for Kintyre in the 11th century. From this descent the clan claims a further descent from the legendary Niall Noigíallach, High King of Ireland, who lived from the mid 4th century to the early 5th century.
Clan MacLachlan Genealogy 