In 1743 he became Bishop of Ossory; and in 1754, Archbishop of Cashel. He married in 1744 Anne O'Brien, daughter of James O'Brien (1695-1771) and Mary Jephson, and granddaughter of William O'Brien, 3rd Earl of Inchiquin and his wife Mary Villiers. She died the following January, aged about 22, giving birth to their only son.
Mary Jephson
Mary Villiers