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KAVANAGH Family History


Linguistic Origin

The surname derives from the Irish personal name ‘Caomhán’, which is a diminutive of ‘Caomh’, which according to Woulfe (‘Sloinnte Gaedheal is Gall’, 1923) means ‘comely, mild’.  This surname should not have the prefix Ó.

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    Paul Kavanagh

    I am Paul Kavanagh from Liverpool uk I’ve been trying to track My grandads relative. He passed in the 90s I only no he had Two brothers Eddie and Ronnie I’ve never met them my dad never speaks about his dad My grandad is Fredrick Kavanagh I don’t have any pictures And information on him but would be great if can trace them

    thomas kavanaugh

    William kavanagh born about 1860 came to America in 1887 probably from Mayo or Donegal.

    Lori Walker

    Sir Moroch lord van ballyleigh Kavanaugh is my 7th great grandfather how cool is that.


    I never knew anyone famous but now I do. My Grandmother is a direct descendant of Donnchadh Mac-Art Mac-Murrough Kavanagh Koning Van Leinster Lord Van Garyhill. I had heard there was royalty but until I started doing research on the Cavanagh . This is totally awesome and my family and generations to come will be in aw of their history.


    My Name Is Joshua Ryan Assanowicz I Am 26 Year Old Almost 27 By November 18 2020 And I Am Descendant Of Caomhanach Clan In Ireland ???????? And My Unlce Ernie Cavanah Have Are Kavanagh Coat Of Arms Tattoo On He Arms And My Unlce Ernie Cavanah Stay At Are Ancestors Kavanagh Castle In Ireland


    My last name is Kavanagh, I live in Quebec and I speak French. My ancestor would have come to Montreal around 1760 and apparently came from Dublin Ireland. His name was James Cavanagh but as we spoke French he was called Jacques. The family name has been written in several ways: Cabanis, Cabanac, Cavanagh or Kavanagh. He would be the son of John Kavanagh and Mary Ann Cluny. He married on February 4, 1760 in St-Laurent (Montreal suburb) with Marie Catherine Gauthier who spoke only French. Our family has almost always lived around Montreal and on the north shore. I would like to know if anyone has any information about this James Cavanagh born around 1742 in Dublin and when and why he immigrated to Montreal.

    Paul Kavanagh

    My Dad Edward Kavanagh of Dublin, I never met my grandad ( my dads dad) have you any information please?

    Elliot O Caomhanach

    Funny you say it doesn't take an O fada. I have always put the O fada in because a teacher in my Irish primary school called me that. So that was it. I took that name O Caomhanach. Sounds so weird now without the O.

    KAVANAGH Family History


    Linguistic Origin

    The surname derives from the Irish personal name ‘Caomhán’, which is a diminutive of ‘Caomh’, which according to Woulfe (‘Sloinnte Gaedheal is Gall’, 1923) means ‘comely, mild’.  This surname should not have the prefix Ó.

    Genealogical Origin

    The great Kavanagh family of Leinster is descended from the notorious 12th century King of Leinster, Diarmaid Mac Murchadha or Dermot MacMurrough, whose appeal for military assistance from the Norman Strongbow brought on the 1169-70 Anglo-Norman invasion of Ireland.  Almost all the descendants of this Leinster king are now bearing the surname Cavanagh/Kavanagh, although certainly the Kinsellas and possibly some Murphys could claim like descent.

    AD1169 Annals of the 1V Masters: ‘The fleet of the Flemings came from England in the army of Mac Murchadha, i.e. Diarmaid, to contest the kingdom of Leinster for him’.

    The Cavanaghs or Kavanaghs are named from their ancestor Domhnall Caomhanach or Donall Cavanagh, Dermot’s son.  The father and son at the head of 500 of their men took part in the Norman attack on Wexford, led by the knight Robert FitzStephen, in 1169/70.

    The great Art MacMurrough Kavanagh, King of Leinster, who died in 1418, expanded the power of the clan, and his territory roughly extended over modern Co Carlow and part of Co Wexford.



    Co Carlow

    LEIGHLINNBRIDGE is possibly the earliest site associated with the MacMurrough Kavanaghs. At the northern approach to the village is the site known as Dinn Righ or ‘hill of the kings’, which was the family’s seat, now represented by a sculpture of ‘thrones’ of these ancient kings.  The nearby castle known as Black Castle was built by the Normans soon after the invasion.  The Cambro-Norman Carews settled here and built the first Carmelite priory in 1270.

    Art Óg Caomhánach, also known as Art McMurrough Kavanagh, defeated the English forces, and killed Roger Mortimer, at the Battle of KELLISTOWN in 1398.

    Co Wexford

    FERNS is where Dermot MacMurrough was buried in 1171.  He had founded the Augustinian Abbey in 1158. Ferns, in fact, had long been the capital of Leinster and the chief seat of its kings.  The castle here was built by the Normans in the 13th century.  It is probably here that Donall Kavanagh was murdered in 1175. The Normans are the chief suspects; and it is not too difficult to work out why.

    AD1175 Annals of Ulster: ‘Domnall Caemanach, [illegitimate] son of Diarmaid Mac Murchadha, king of Leinster [was slain]’.

     NEW ROSS was burned by the great Art McMurrough Kavanagh in 1394: Annals of the Four Masters: ‘An army was led by Art Mac Murrough, King of Leinster, against the English; and he burned Ros-mic-Triuin, with its houses and castles, and carried away from it gold, silver, and hostages’.

    Art Kavanagh was the greatest of them all.  His long war with Richard 11’s army is the stuff of legend.  He was finally poisoned by his enemies in New Ross in 1417.  Former Chief Herald, Dr. MacLysaght (‘Irish Families’, 1982) states that today’s Kavanaghs/Cavanaghs are directly descended from him

    AD1395 Annals of the 1V Masters: ‘The English of Leinster attempted to make Mac Murrough (Art) prisoner, by treachery; but this was of no avail to them, for he escaped from them by the strength of his arm, and by his valour, so that they were not able to do him any injury’.





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