Career
In 1862, he was appointed High Sheriff of Clare. Born the eldest son of Lucius O'Brien, 13th Baron Inchiquin and Mary Fitzgerald. He took the title in March 1872, upon the death of his father, and was appointed a Knight of the Order of St. Patrick on 5 August 1892.
One daughter, Beatrice, married Guglielmo Marconi, the radio pioneer.