Dermott Ó Seachnasaigh Explained

Sir Dermott Ó Seachnasaigh, Chief of the Name, died 1673.

Ó Seachnasaigh was married to Joan, daughter of Lord Barrymore and had sons Roger and Cormac. A copy of his will survives.

References

• Book: D'Alton, John . John D'Alton (historian)

. John D'Alton (historian) . Illustrations, Historical and Genealogical, of King James's Irish Army List (1689) . Dublin . 1st . 1855 . 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