Gregory Peck | Pope Leo XIII | Louis XIII of France | Alfonso XIII of Spain | Gregory of Tours | Order of St. Gregory the Great | Gregory Bateson | Pope Gregory VII | Gregory of Nyssa | Pope Gregory XIII | Pope Gregory XVI | Lady Gregory | Gregory S. Paul | Gregory Corso | Pope Gregory XV | Pope Clement XIII | Gregory of Nazianzus | Pope Gregory XI | Philippa Gregory | Gregory the Illuminator | Gregory Olsen | Gregory Blaxland | Dick Gregory | Antipope Benedict XIII | Pope Gregory I | Pope Benedict XIII | Goemon Ishikawa XIII | Organization XIII | Gregory Reinhart | Gregory Deyermenjian |
Dermod O'Hurley of Limerick, a distinguished student of the university of Louvain in the Duchy of Brabant and professor at Reims in France, was appointed in 1581 by pope Gregory XIII.
Under Urban V (1363) the list contained seven cases; under Gregory XI (1372) nine; under Martin V (1420) ten; under Julius II (1511) twelve: under Paul III (1536) seventeen; under Gregory XIII in 1577 twenty, and under the same pontiff in 1583 twenty-one; under Paul V (1606 and 1619) twenty; and the same number in the final shape given to it by Urban VIII.
He studied canon law at Salamanca, where his brother, Pedro de Castro Lemos, who later became bishop of Cuenca (1553–1561), was named cardinal on 15 December 1583, by Gregory XIII.
Through the Guise party, whose cause he had aided, he became Bishop of Mende in France, but Charles, Duke of Guise pleaded unsuccessfully with Gregory XIII to have him made cardinal.