Pope Pius IV

Pope Pius IV
Bishop of Rome
Portrait by Scipione Pulzone, c. 1560s
Church	Catholic Church
Papacy began	25 December 1559
Papacy ended	9 December 1565
Predecessor	Paul IV
Successor	Pius V
Previous post(s)	Archbishop of Ragusa (1545–1553) Cardinal-Priest of Santa Pudenziana (1549–1550) Cardinal-Priest of Santa Anastasia (1550–1552) Apostolic Administrator of Cassano all'Jonio (1553–1556) Cardinal-Priest of San Stefano al Monte Celio (1553–1557) Bishop of Foligno (1556–1557) Cardinal-Priest of Santa Prisca (1557–1559) Apostolic Administrator of Milan (1559–1560)
Orders
Consecration	20 April 1546 by Filippo Archinto
Created cardinal	8 April 1549 by Paul III
Personal details
Born	Giovanni Angelo Medici 31 March 1499 Milan, Duchy of Milan
Died	9 December 1565(1565-12-09) (aged 66) Rome, Papal States
Coat of arms
Other popes named Pius

Papal styles of Pope Pius IV
Reference style	His Holiness
Spoken style	Your Holiness
Religious style	Holy Father
Posthumous style	None

Pope Pius IV (Italian: Pio IV; 31 March 1499 – 9 December 1565), born Giovanni Angelo Medici, was head of the Catholic Church and ruler of the Papal States from 25 December 1559 to his death, in December 1565. Born in Milan, his family considered itself a branch of the House of Medici and used the same coat of arms. Although modern historians have found no proof of this connection, the Medici of Florence recognized the claims of the Medici of Milan in the early 16th century.^[1][2]

Pope Paul III appointed Medici Archbishop of Ragusa, and sent him on diplomatic missions to the Holy Roman Empire and Hungary. He presided over the final session of the Council of Trent. His nephew, Cardinal Charles Borromeo, was a close adviser. As pope, Pius IV initiated a number of building projects in Rome, including one to improve the water supply.