Genealogy research by Mark Humphrys,
Murrough O'Brien, 1st Earl of Thomond, and last King of Thomond (see here and here),
Murrough O'Brien, 3rd Baron of Inchiquin (see here),
said to be born 1550, but see below,
mar Margaret Cusack [dau of Sir Thomas Cusack of Lismullen, Co.Meath, by his wife Maud Darcy, dau of John Darcy],
murdered in 1573 or 1574,
Murrough O'Brien, 4th Baron of Inchiquin (see here),
said to be age 11 at father's death (born 1562 or 1563), either this or father's date of birth must be wrong,
mar Mabel Nugent [born post-1575, descendant of Edward III],
his marriage is often confused with his father's marriage, but Mabel Nugent was born after his father's death,
[Complete Peerage] has the correct marriages,
killed in battle, 29 July 1597, buried at Donegal Abbey,
Dermod O'Brien, 5th Baron of Inchiquin (see here and here),
born around Oct 1594 (age 2 years 9 months at father's death),
mar in or before 1614 to Ellen Fitzgerald [descendant of Edward I and of Aoife Mac Murrough],
he died 29 Dec 1624, age 30 yrs,
An extract of the lament "The Ruin that befell the Great Families of Erin" (c.1720) by the Gaelic poet Aodhagán Ó Rathaille.
From page 11 of [Dineen and O'Donoghue, 1911].
"And sooth to say, the O'Briens have long since become English."
I have spent a great deal of time and money on this research. Research involves travel and many expenses.
Some research "things to do" are not done for years, because I do not have the money to do them.
Please Donate Here to support the ongoing research and to keep this website free.