Dermott Ó Seachnasaigh
Irish chief of the name
About Dermott Ó Seachnasaigh
Lived 1600 – 1673.
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.
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Important facts
Contemporaries
People whose lives overlapped Dermott Ó Seachnasaigh's
Frequently asked questions
Who was Dermott Ó Seachnasaigh?
Irish chief of the name
When was Dermott Ó Seachnasaigh born?
Dermott Ó Seachnasaigh was born in 1600.
When did Dermott Ó Seachnasaigh die?
Dermott Ó Seachnasaigh died in 1673.
Sources & further reading
· Wikipedia: Dermott Ó Seachnasaigh
· DBpedia: Dermott Ó Seachnasaigh
Cite this page
APA: Biography.guide. (2026). Dermott Ó Seachnasaigh. https://biography.guide/dermott-o-seachnasaigh/
MLA: "Dermott Ó Seachnasaigh." Biography.guide, https://biography.guide/dermott-o-seachnasaigh/.
Chicago: "Dermott Ó Seachnasaigh." Biography.guide. https://biography.guide/dermott-o-seachnasaigh/.
Data last updated: 2026-09-20 · Spot an error? Report a correction.
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