“ Descendants of the 1st earl in Spain continued to style themselves earls of Tyrone till the death early in the 18th century of Owen O'Neill, grandson of Owen Roe O'Neill. In 1673 Richard Power, 6th Baron Le Power and Coroghmore, governor of Waterford, was created viscount of Decies and earl of Tyrone, being succeeded in these titles by his two sons successively, on the death of the younger of whom in 1704 they became extinct. ”