Sir Roger O'Shaughnessy, The O'Shaughnessy (died 11 July 1690 [1] ), was Chief of the Name and a captain in the Irish army of James II of England. He was present at the Battle of the Boyne, and died ("sick, though not wounded") ten days after the battle at his castle in Gort. [1] All his property was declared forfeit, and his son and heir, William O'Shaughnessy, was forced into exile.
In 1697 Roger's estates were granted to Sir Thomas Prendergast, 1st Baronet, a Catholic neighbor; who had previously been a Jacobite and Confederate and had lost most of his own estates during the Cromwellian Wars; but this time decided to switch sides. There followed decades of legal disputes with the Prendergasts, but the O'Shaughnessy family were never able to recover them.[ citation needed ]
Roger was the son of Dermot O'Shaughnessy. [1]
He married Helena, daughter of Conor O'Brien, a son of Donogh O'Brien, 4th Earl of Thomond. Her brother was William O'Brien.
Their children were: [1]
Roger O'Shaughnessy succeeded to the O'Shaugnessy lands in Ireland in 1678. [2]
Ó Seachnasaigh, O'Shaughnessy, collectively Uí Sheachnasaigh, clan name Cinél nAedha na hEchtghe, is a family surname of Irish origin. The name is found primarily in County Galway and County Limerick. Their name derives from Seachnasach mac Donnchadh, a 10th-century member of the Uí Fiachrach Aidhne, which the Ó Seachnasaigh were the senior clan of. The town of Gort, Ireland, was the main residence of the family since at least the time of their ancestor, King Guaire Aidne mac Colmáin.
John Prendergast-Smyth, 1st Viscount Gort was an Irish politician.
Brigadier-General Sir Thomas Prendergast, 1st Baronet was an Irish politician and soldier.
Sir Thomas Prendergast, 2nd Baronet was an Irish politician. His career was helped by influential family connections, but apparently hampered by his own lack of ability. To Jonathan Swift, who detested him, he was "Noisy Tom", while the King called him "that Irish blockhead".
Daniel O'Brien, 3rd Viscount Clare, was with King Charles II in exile during the interregnum. At the Restoration, he obtained the title of Viscount Clare for his grandfather and full restoration of the family's lands. At the Glorious Revolution he supported James II, sitting in the Patriot Parliament and fighting for him at the Battle of the Boyne. He was in consequence attainted as a Jacobite.
William O'Shaughnessy, The O'Shaughnessy was an Irish Chief and Major-General.
Ruaidhrí Gilla Dubh Ó Seachnasaigh was an Irish Knight and Chief of the Name. He is known in English as Sir Roger O'Shaughnessy.
Donal IV O'Donovan,, The O'Donovan, of Clancahill, was the son of Donal III O'Donovan, The O'Donovan of Clancahill, and Gyles (Sheela) O'Shaughnessy, daughter of Elis Lynch and Sir Roger Gilla Duff O'Shaughnessy, The O'Shaughnessy.
Diarmaid Ó Seachnasaigh, Irish knight and Chief of the Name, died before 1567.
Diarmaid Riabach Ó Seachnasaigh, Chief of the Name, died 1579.
Sir Liam Ó Seachnasaigh was an Irish Chief of the Name.
Sir Dermot Ó Seachnasaigh, Chief of the Name, died 1606. He was a son of Sir Ruaidhrí Gilla Dubh Ó Seachnasaigh and Lady Honora O'Brien, daughter of Murrough O'Brien, 1st Earl of Thomond.
Sir Ruadhri Gilla Dubh Ó Seachnasaigh was Chief of the Name during 1583–1650.
Sir Dermott Ó Seachnasaigh, Chief of the Name, died 1673.
Colman O'Shaughnessy, O.P. was an Irish Roman Catholic clergyman who served as Bishop of Ossory from 1736 until his death in 1748.
Robuck or Roebuck O'Shaughnessey was an Irish Chief of the Name and Lord of Cenél Áeda na hEchtge.
Joseph O'Shaughnessey was an Irish Chief of the Name.
Bartholomew O'Shaughnessey, Chief of the Name, born 1789, alive 1843.
John Ó Seachnasaigh was an Irish Chief of the Name.
Cormac MacDermot MacCarthy, 16th Lord of Muskerry (1552–1616) was an Irish magnate and soldier. He fought at the Siege of Kinsale during Tyrone's Rebellion.
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