Liam Ó Seachnasaigh

Sir Liam Ó Seachnasaigh, Chief of the Name, died 1579.

Ó Seachnasaigh was the eldest legitimate son of Sir Ruaidhrí Gilla Dubh Ó Seachnasaigh by Lady Honora O'Brien, daughter of Murrough O'Brien, 1st Earl of Thomond, but till 1573 had been usurped as Chief by his uncle, Diarmaid Riabach. Diarmaid was deposed but in 1579 ambushed Sir Liam at Ard Maoldubhain. The latter was killed, but had so severely wounded Diarmaid that he died shortly after of his wounds. Sir Liam was succeeded by his younger brother, Dermot.

References

D'Alton, John, Illustrations, Historical and Genealogical, of King James's Irish Army List (1689). Dublin: 1st edition (single volume), 1855. pp. 328–32.
History of Galway, James Hardiman, 1820
Tabular pedigrees of O'Shaughnessy of Gort (1543–1783), Martin J. Blake, Journal of the Galway Archaeological and Historical Society, vi (1909–10), p. 64; vii (1911–12), p. 53.
John O'Donovan. The Genealogies, Tribes, and Customs of Hy-Fiachrach. Dublin: Irish Archaeological Society. 1844. Pedigree of O'Shaughnessy: pp. 372–91.
Old Galway, Professor Mary Donovan O'Sullivan, 1942
Galway: Town and Gown, edited Moran et al., 1984
Galway: History and Society, 1996

Preceded by Diarmaid Riabach Ó Seachnasaigh	Lord of Cenél Áeda na hEchtge before 1573-1579	Succeeded by Dermot Ó Seachnasaigh

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