Fineen MacCarthy Reagh, 8th Prince of Carbery

Finghin MacCarthy Reagh, Prince of Carbery: married Catherine, daughter of Thomas Fitzgerald, the 8th "Earl of Desmond," who was beheaded at Drogheda; he left issue: Donal, Dermod, Donogh, and Cormac.
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... but the Book of Lismore is now satisfactorily ascertained to have been transcribed, in the latter half of the fifteenth century, for Fineen McCarthy Reagh, Lord of Carbery, and his wife Catherine, the daughter of Thomas, eighth Earl of Desmond. (Lectures on the manuscript materials of ancient Irish history - Page 199 Eugene O'Curry. 1861.)

https://en.wikipedia.org/wiki/Finghin_MacCarthy_Reagh

Finghin married Katherine, daughter of Thomas FitzGerald, 7th Earl of Desmond, and they had issue:

   Donal MacFineere MacCarthy Reagh, 9th Prince of Carbery

   Donogh

   Dermod

   Ilin, married James de Barry, Lord Ibane

with the possible addition of another son, Cormac.