Jacob Kettler

1610 - 1682

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Jacob Kettler (German: Jakob von Kettler, Latvian: Hercogs Jēkabs Ketlers; 28 October 1610 – 1 January 1682) was a Baltic German Duke of the Duchy of Courland and Semigallia (1642–1682). Under his rule, Courland and Semigallia became more independent of its Polish suzerain, reached its peak in wealth, and even engaged in its own overseas colonization, making it one of the smallest, but fastest growing states in the world at that time. Yet, in the end the results of his rule failed in the confrontation with much stronger powers both directly in the Baltic (Sweden) and overseas (Dutch Republic). Read more on Wikipedia

Since 2007, the English Wikipedia page of Jacob Kettler has received more than 135,714 page views. His biography is available in 25 different languages on Wikipedia (up from 24 in 2019). Jacob Kettler is the 3,455th most popular politician (up from 3,610th in 2019), the 12th most popular biography from Latvia (up from 14th in 2019) and the 4th most popular Latvian Politician.

Jacob Kettler is most famous for being the founder of the Kettler Company.

Memorability Metrics

  • 140k

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  • 62.06

    Historical Popularity Index (HPI)

  • 25

    Languages Editions (L)

  • 8.55

    Effective Languages (L*)

  • 1.80

    Coefficient of Variation (CV)


Among politicians, Jacob Kettler ranks 3,455 out of 19,576Before him are Olaf III of Norway, Lucius Aelius, Henry II the Pious, Gebre Mesqel Lalibela, João Lourenço, and Nayef bin Abdul-Aziz Al Saud. After him are Luís Filipe, Prince Royal of Portugal, Hormizd II, Nikolai Tikhonov, Sigismund Báthory, Cleopatra Thea, and Princess Maria Josepha of Saxony.

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Among people born in 1610, Jacob Kettler ranks 4Before him are Pope Alexander VIII, Ferdinando II de' Medici, Grand Duke of Tuscany, and Adriaen van Ostade. After him are Archduchess Maria Anna of Austria, David Teniers the Younger, Louise Moillon, Paul Scarron, Ivan Sirko, Francesco I d'Este, Duke of Modena, Oboi, and Li Yu. Among people deceased in 1682, Jacob Kettler ranks 7Before him are Bartolomé Esteban Murillo, Claude Lorrain, Feodor III of Russia, 5th Dalai Lama, Evliya Çelebi, and Jacob van Ruisdael. After him are Johann Joachim Becher, Avvakum, Baldassare Longhena, Alessandro Stradella, Jean Picard, and Prince Rupert of the Rhine.

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In Latvia

Among people born in Latvia, Jacob Kettler ranks 12 out of 323Before him are Mariss Jansons (1943), Mikhail Baryshnikov (1948), Nicolai Hartmann (1882), Kārlis Ulmanis (1877), Vaira Vīķe-Freiberga (1937), and Ernst Gideon von Laudon (1717). After him are Aron Nimzowitsch (1886), Gidon Kremer (1947), Peter von Biron (1724), Ernst Johann von Biron (1690), Vera Mukhina (1889), and Mischa Maisky (1948).


Among politicians born in Latvia, Jacob Kettler ranks 4Before him are Kārlis Ulmanis (1877), Vaira Vīķe-Freiberga (1937), and Ernst Gideon von Laudon (1717). After him are Peter von Biron (1724), Ernst Johann von Biron (1690), Andris Bērziņš (1944), Egils Levits (1955), Frederick Casimir Kettler (1650), Pauline Therese of Württemberg (1800), Frederick William, Duke of Courland (1692), and Jānis Čakste (1859).