Sir Dermott Ó Seachnasaigh,

Chief of the Name The Chief of the Name, or in older English usage Captain of his Nation, is the recognised head of a family or clan ( Irish and Scottish Gaelic: ''fine'') in Ireland and Scotland. Ireland There are instances where Norman lords of the time like ...

, died 1673. Ó Seachnasaigh was married to Joan, daughter of

Lord Barrymore Earl of Barrymore was a title in the Peerage of Ireland. It was created for David Barry, 6th Viscount Buttevant, in 1627/28. Lord Barrymore held the subsidiary titles of Baron Barry (created c. 1261) and Viscount Buttevant (created 1541) in the ...

and had sons Roger and Cormac. A copy of his will survives.

References

* * ''History of Galway'',

James Hardiman James Hardiman (February 1782 – 13 November 1855), also known as Séamus Ó hArgadáin, was a librarian at Queen's College, Galway and an important historian. Hardiman is best remembered for his '' History of the Town and County of Galway'' (1 ...

, 1820 * ''Tabular pedigrees of O'Shaughnessy of Gort'' (1543–1783), Martin J. Blake, Journal of the

Galway Archaeological and Historical Society The Galway Archaeological and Historical Society was founded on 21 March 1900. It promotes historical preservation, as well as the study of the archaeology and history of the west of Ireland. As of January 2002, the Society had published 53 cons ...

, vi (1909–10), p. 64; vii (1911–12), p. 53. *

John O'Donovan John O'Donovan may refer to: *John O'Donovan (scholar) (1806–1861), Irish language scholar and place-name expert *John O'Donovan (politician) (1908–1982), Irish TD and Senator *John O'Donovan (police commissioner) (1858–1927), New Zealand pol ...

The Genealogies, Tribes, and Customs of Hy-Fiachrach
Dublin:

Irish Archaeological Society The Irish Archaeological Society (sometimes spelled as "Irish Archæological Society") was a learned society, founded in 1840. Among the founders were the scholar John O'Donovan and the Rev. Dr. Todd, who acted as secretary. The Irish Archaeol ...

. 1844. Pedigree of O'Shaughnessy: pp. 372–91. * ''Old Galway,'' Professor

Mary Donovan O'Sullivan Mary Josephine Donovan O'Sullivan was professor of history at Queens College, Galway (now NUI Galway) from 1914 to 1957. Biography One of ten children, four of whom survived infancy, Donovan was born at Fair Hill Road in Galway on 24 November ...

, 1942 * ''Galway: Town and Gown,'' edited Moran et al., 1984 * ''Galway: History and Society'', 1996 {{DEFAULTSORT:O Seachnasaigh, Dermott Nobility from County Galway Dermott 17th-century Irish people 1673 deaths Year of birth missing