The relations between Pope Pius X and Russia were difficult, and the situation of Polish Catholics in Russia did not improve. Tsar Nicolas issued a decree...

Pope Pius X (Italian: Pio X; born Giuseppe Melchiorre Sarto; 2 June 1835 – 20 August 1914) was head of the Catholic Church from 4 August 1903 to his death...

prepared with Eugenio Pacelli (the future Pope Pius XII) and Pietro Gasparri during the pontificate of Pope Pius X. The new Code of Canon Law is considered...

Pope Pius XII (born Eugenio Maria Giuseppe Giovanni Pacelli, Italian pronunciation: [euˈdʒɛːnjo maˈriːa dʒuˈzɛppe dʒoˈvanni paˈtʃɛlli]; 2 March 1876 –...

Archive and international diplomatic correspondence continue. Two Popes served through the Nazi period: Pope Pius XI (1922–1939) and Pope Pius XII (1939–1958)...

Pope Clement X (Latin: Clemens X; Italian: Clemente X; 13 July 1590 – 22 July 1676), born Emilio Bonaventura Altieri, was head of the Catholic Church...

pope on the conclave's fourteenth ballot on 6 February 1922 and took the name "Pius XI", explaining that Pius IX was the pope of his youth and Pius X...

Pope Pius IX (Italian: Pio IX, Pio Nono; born Giovanni Maria Mastai Ferretti; 13 May 1792 – 7 February 1878) was head of the Catholic Church from 1846...

1569, Pope Pius V issued the papal bull Consueverunt Romani Pontifices which popularized the rosary. Before the Battle of Lepanto in 1571 Pius V requested...

Nazi-era Catholics Popes Pius XI (1922–1939) and Pius XII (1939–1958) led the Catholic Church during the rise and fall of Nazi Germany. Around a third...