"Pope Paul IV, C.R. (Latin: Paulus IV; 28 June 1476 – 18 August 1559), born Gian Pietro Carafa, was head of the Catholic Church and ruler of ...
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the Papal States from 23 May 1555 to his death in 1559. While serving as papal nuncio in Spain, he developed an anti-Spanish outlook that later coloured his papacy. A part of the Papal States was invaded by Spain during his papacy and in response to this, he called for a French military intervention. To avoid a conflict at the same time of the Italian War of 1551–1559, the Papacy and Spain reached a compromise with the Treaty of Cave: French and Spanish forces left the Papal States and the Pope adopted a neutral stance between France and Spain." - (en.wikipedia.org 31.01.2020)