Background
He was the son of Murrough McDermot O'Brien, 3rd Baron Inchiquin and Mabel Nugent, daughter of Christopher Nugent, 6th Baron Delvin.
He was the son of Murrough McDermot O'Brien, 3rd Baron Inchiquin and Mabel Nugent, daughter of Christopher Nugent, 6th Baron Delvin.
He was shot in 1597 when fording the River Erne near Sligo during the Nine Years War. When half across the ford, a bullet passed under one arm and out at the other. He fell from his horse and drowned.