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Imperial Diet (Holy Roman Empire)

general assembly of the Holy Roman Empire

16 dated entries naming Imperial Diet (Holy Roman Empire), drawn from 15 separate years between 885 CE and 1654 CE. Nothing here is written by us: each line is the sentence a Wikipedia year article used, and the link beside it opens the exact revision.

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9th century

  • 885July 8 – Pope Adrian III dies after a 1½ reign near Modena (Lombardy), while en route to an Imperial Diet, summoned by Charles the Fat at Worms. He is succeeded by Stephen V, as the 110th pope of the Catholic Church.source
  • 895May – Arnulf of Carinthia summons the Imperial Diet in his residence at Worms. Angered by the non-appearance of Charles the Simple, he again supports Odo's claim to the throne of the West Frankish Kingdom. In the same assembly, he crowns Zwentibold as king of Lotharingia.source

10th century

  • 919May 24 – The nobles of Franconia and Saxony elect Henry the Fowler at the Imperial Diet in Fritzlar as ruler of the East Frankish Kingdom. He recognizes the stem duchies (uniting them in a German confederation) and all their sovereign privileges. Two of the four most influential duchies, Bavaria and Swabia, do not accept his rule. Henry fortifies Magdeburg against the Magyars.source
  • 952Summer – At the Reichstag in Augsburg (assembled by King Otto I), joined by German nobles and bishops, Berengar of Ivrea pays homage. He becomes a vassal of the East Frankish Kingdom. Otto leaves a strong garrison at Pavia in the hands of his son-in-law Conrad the Red, duke of Lotharingia.source
  • 961May 26 – Otto I, Holy Roman Emperor elects his 6-year-old son Otto II as heir apparent and co-ruler at the Imperial Diet in Worms. He is crowned at Aachen, and placed under the tutelage of his grandmother Matilda and his half-brother William of Mainz. Otto's own brother Bruno I is charged with the provisional government of Lorraine again.source
  • 994September – King Otto III, now 14 years old, receives the regalia to rule the Kingdom of Germany at an assembly of the Imperial Diet in Solingen. Otto appoints Heribert of Cologne as chancellor of Italy.source

11th century

  • 1037February – At an Imperial Diet in Pavia (assembled by Conrad II), Aribert is accused of fomenting a revolt against the Holy Roman Empire, Conrad orders his arrest.source

12th century

  • 1135August 15 – Emperor Lothair III receives homage from Eric II, and makes him an imperial prince at the Reichstag. His diplomatic missions to Hungary and Poland result in a tribute payment. Duke Bolesław III Wrymouth is given Pomerania and Rügen as German fiefs.source
  • 1165Spring – Byzantine Emperor Manuel I Komnenos makes an alliance with Venice against Holy Roman Emperor Frederick Barbarossa, who takes an oath at the Diet of Würzburg to support Antipope Paschal III against Pope Alexander III.source
  • 1180January 13 – Henry the Lion, Duke of Saxony and Bavaria, is stripped of his duchies and all his imperial fiefs at an Imperial Diet in Würzburg for violating the king's peace. On April 13, Emperor Frederick I Barbarossa issues the Gelnhausen Charter, formally dissolving Henry's former domains. A portion of Saxony is reorganized as the Duchy of Westphalia, while other territories are granted to his ally, Otto I the Redhead, Duke of Bavaria.source
  • 1181Henry the Lion, duke of Saxony, submits to Emperor Frederick I (Barbarossa) at an Imperial Diet in Erfurt. He is banished to England and retains only Brunswick among his former lands.source

15th century

  • 1471May 27 – Two months after the death of King George of Poděbrady, the Diet of Bohemian nobles meets at Kutná Hora and elects Vladislaus Jagiello as the new King of Bohemia. The papal legate, Lorenzo Roverella, Bishop of Ferrara, declares the election void with the approval of Pope Paul II, and endorses Matthias Corvinus, King of Hungary, to be the new King of Bohemia, which the Imperial Diet of the Holy Roman Empire refuses to approve.source

16th century

  • 1507April 27 – In Germany, the Imperial Diet of the Holy Roman Empire convenes at Konstanz and begins a series of reforms.source
  • 1530April 8 – At the invitation of the Holy Roman Emperor, the members of the Imperial Diet open their session at Augsburg in Germany to prepare the Augsburg Confession, an official imperial set of rules for Protestantism.source
  • 1530January 21 – Charles V, Holy Roman Emperor, issues letters from his winter residence in Bologna, inviting members of the Imperial Diet to convene at Augsburg on April 8 to discuss various theological questions.source

17th century

  • 1654May 8 – Otto von Guericke demonstrates the power of atmospheric pressure and the effectiveness of his vacuum pump, using the Magdeburg hemispheres, before Ferdinand III, Holy Roman Emperor, and the Imperial Diet in Regensburg.source

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