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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 1,980,741 page views. His biography is available in 88 different languages on Wikipedia (up from 84 in 2019). Pope Pius IX is the 72nd most popular religious figure (down from 62nd in 2019), the 81st most popular biography from Italy (down from 79th in 2019) and the 15th 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

  • 2.0M

    Page Views (PV)

  • 78.08

    Historical Popularity Index (HPI)

  • 88

    Languages Editions (L)

  • 11.56

    Effective Languages (L*)

  • 3.42

    Coefficient of Variation (CV)

Page views of Pope Pius IXES by language


Among religious figures, Pope Pius IX ranks 72 out of 2,238Before him are Pope Sylvester I, Muhammad al-Bukhari, Pope Gregory XIII, Pope Urban II, Pope Julius II, and Pope Gregory VII. After him are Pope Paul VI, Ruhollah Khomeini, Pope Leo X, Girolamo Savonarola, Ezekiel, and Mark the Evangelist.

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

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In Italy

Among people born in Italy, Pope Pius IX ranks 81 out of 4,668Before him are Livy (-59), Giorgio Vasari (1511), Pope Julius II (1443), Marcus Licinius Crassus (-115), Ennio Morricone (1928), and Pope Gregory VII (1020). After him are Titus (41), Michael Collins (1930), Antonio Salieri (1750), Giotto (1267), Filippo Brunelleschi (1377), and Pope Paul VI (1897).


Among religious figures born in Italy, Pope Pius IX ranks 15Before him are Pope Pius XI (1857), Saint Valentine (226), Pope Sylvester I (300), Pope Gregory XIII (1502), Pope Julius II (1443), and Pope Gregory VII (1020). After him are Pope Paul VI (1897), Pope Leo X (1475), Girolamo Savonarola (1452), Pope Pius X (1835), Pope Benedict XV (1854), and Pope Paul III (1468).