Antipope Clement III

1025 - 1100

Photo of Antipope Clement III

Icon of person Antipope Clement III

Guibert or Wibert of Ravenna (c. 1029 – 8 September 1100) was an Italian prelate, archbishop of Ravenna, who was elected pope in 1080 in opposition to Pope Gregory VII and took the name Clement III. Gregory was the leader of the movement in the church which opposed the traditional claim of European monarchs to control ecclesiastical appointments, and this was opposed by supporters of monarchical rights led by the Holy Roman Emperor. This led to the conflict known as the Investiture Controversy. Read more on Wikipedia

Since 2007, the English Wikipedia page of Antipope Clement III has received more than 113,434 page views. His biography is available in 31 different languages on Wikipedia. Antipope Clement III is the 75th most popular social activist (down from 73rd in 2019), the 874th most popular biography from Italy (down from 831st in 2019) and the 3rd most popular Italian Social Activist.

Clement III was the first pope to be elected by a conclave of cardinals, which was the result of a series of quarrels and violence in Rome. Clement III is most famous for being the first pope to be elected by a conclave of cardinals.

Memorability Metrics

  • 110k

    Page Views (PV)

  • 71.91

    Historical Popularity Index (HPI)

  • 31

    Languages Editions (L)

  • 8.91

    Effective Languages (L*)

  • 2.14

    Coefficient of Variation (CV)

Page views of Antipope Clement IIIS by language


Among social activists, Antipope Clement III ranks 75 out of 544Before him are Dominique Pire, Dragutin Dimitrijević, Gabrielle d'Estrées, Jenny von Westphalen, Edmond James de Rothschild, and José Rizal. After him are Aleksandr Ulyanov, Sakamoto Ryōma, Jane Addams, Susan B. Anthony, Thomas Cranmer, and Yun Chi-ho.

Most Popular Social Activists in Wikipedia

Go to all Rankings


Among people born in 1025, Antipope Clement III ranks 2Before him is Anne of Kiev. After him are Agnes of Poitou, Rudolf of Rheinfelden, Emperor Go-Reizei, Floris I, Count of Holland, John Italus, Ruben I, Prince of Armenia, and Edith of Wessex. Among people deceased in 1100, Antipope Clement III ranks 4Before him are Godfrey of Bouillon, Parascheva of the Balkans, and William II of England. After him are Emperor Zhezong, George Kedrenos, Bretislav II, Naropa, and Edmund of Scotland.

Others Born in 1025

Go to all Rankings

Others Deceased in 1100

Go to all Rankings

In Italy

Among people born in Italy, Antipope Clement III ranks 874 out of 4,088Before him are Lucius Cornelius Cinna (-135), Galeazzo Maria Sforza (1444), Giovanni Alfonso Borelli (1608), Giovanni Pisano (1248), Herod Agrippa II (28), and Gianluigi Buffon (1978). After him are Rachele Mussolini (1890), Elena Cornaro Piscopia (1646), Princess Maria Annunciata of Bourbon-Two Sicilies (1843), Giuseppe Torelli (1658), Alessandro Marcello (1673), and Renata Tebaldi (1922).


Among social activists born in Italy, Antipope Clement III ranks 3Before him are Fra Dolcino (1250) and Errico Malatesta (1853). After him are Beatrice Cenci (1577), Ernesto Teodoro Moneta (1833), Frank Costello (1891), Andreas Hofer (1767), Moses Montefiore (1784), Beppe Grillo (1948), and Giuseppe Impastato (1948).