Pope Pius IX

1792 - 1878

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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 to 1878, the longest verified papal reign. He was notable for convoking the First Vatican Council in 1868 and for permanently losing control of the Papal States in 1870 to the Kingdom of Italy. Read more on Wikipedia

Since 2007, the English Wikipedia page of Pope Pius IX has received more than 1,718,511 page views. His biography is available in 84 different languages on Wikipedia (down from 85 in 2019). Pope Pius IX is the 62nd most popular religious figure (down from 54th in 2019), the 79th most popular biography from Italy (down from 68th in 2019) and the 12th most popular Italian Religious Figure.

Pope Pius IX is most famous for his 1854 declaration of the Immaculate Conception, which declared that Mary was conceived without sin.

Memorability Metrics

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    Page Views (PV)

  • 83.46

    Historical Popularity Index (HPI)

  • 84

    Languages Editions (L)

  • 11.56

    Effective Languages (L*)

  • 3.27

    Coefficient of Variation (CV)

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Among religious figures, Pope Pius IX ranks 62 out of 2,272Before him are Pope Julius II, Muhammad al-Bukhari, Ruhollah Khomeini, Pope Urban II, Pope Pius XI, and Hildegard of Bingen. After him are Samson, Saint Barbara, Abu Hanifa, Pope Gregory XIII, Pope Gregory VII, and Anthony the Great.

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Among people born in 1792, Pope Pius IX ranks 2Before him is Gioachino Rossini. After him are Percy Bysshe Shelley, Nikolai Lobachevsky, John Herschel, Gaspard-Gustave de Coriolis, William II of the Netherlands, Karl Ernst von Baer, Caroline Augusta of Bavaria, Alexander Ypsilantis, Therese of Saxe-Hildburghausen, and Johan August Arfwedson. Among people deceased in 1878, Pope Pius IX ranks 1After him are Victor Emmanuel II of Italy, Archduke Franz Karl of Austria, Claude Bernard, Princess Alice of the United Kingdom, Joseph Henry, Julius von Mayer, Charles-François Daubigny, Maria Christina of the Two Sicilies, George V of Hanover, Ernst Heinrich Weber, and Antoine César Becquerel.

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In Italy

Among people born in Italy, Pope Pius IX ranks 79 out of 4,088Before him are Lucrezia Borgia (1480), Pope Pius XI (1857), Federico Fellini (1920), Giuseppe Arcimboldo (1526), Titus (41), and Filippo Brunelleschi (1377). After him are Sophia Loren (1934), Pope Gregory XIII (1502), Pope Gregory VII (1020), Lucretius (-94), Masaccio (1401), and Frederick II, Holy Roman Emperor (1194).


Among religious figures born in Italy, Pope Pius IX ranks 12Before him are Benedict of Nursia (480), Pope Clement VII (1478), Pope John XXIII (1881), Saint Valentine (226), Pope Julius II (1443), and Pope Pius XI (1857). After him are Pope Gregory XIII (1502), Pope Gregory VII (1020), Pope Leo XIII (1810), Pope Paul VI (1897), Pope Innocent III (1160), and Pope Pius X (1835).