Dermod McMurrough O'Brien (died 1 May 1557) was the 2nd

Baron Inchiquin Baron Inchiquin () is one of the older titles in the Peerage of Ireland. It was one of two titles created on 1 July 1543 for Murrough O'Brien, Prince of Thomond, who claimed descent from Brian Boru, a High King of Ireland. The English titles ...

. He was the son of

Murrough O'Brien, 1st Earl of Thomond Murrough O'Brien, 1st Baron of Inchiquin, 1st Earl of Thomond () (died 7 November 1551) was an Irish peer, Chief of Clan O'Brien, and the last King of Thomond. Biography Murrough was a lineal descendant of Brian Boru, High King of Ireland, and ...

and Eleanor FitzGerald. O'Brien married Margaret O'Brien, daughter of Donough O'Brien, 2nd Earl of Thomond (a nephew of

). He died at Ennis Abbey in 1557. The title passed to his son

Murrough McDermot O'Brien, 3rd Baron Inchiquin Murrough McDermot O'Brien (c.1550 - 20 April 1573) was the 3rd Baron Inchiquin. He was the son of Dermod O'Brien, 2nd Baron Inchiquin and Margaret O'Brien and inherited his title in 1557 on the death of his father. He married Margaret Cusack, ...

References

* 1557 deaths Dermod People from County Clare 16th-century Irish nobility Year of birth unknown 2 {{Ireland-baron-stub