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Gisela of France was a legendary 10th-century CE Francian princess, who, according to tradition, was married off to Viking leader Rollo of Normandy. Her name, Gisela or Gisla, comes from an Old German word meaning "to pledge", the French...

Sir Philip Sidney (1554-1586) was an English poet, scholar, soldier, and courtier, one of the most prominent figures at the court of Queen Elizabeth I of England (r. 1558-1603). During his lifetime, he was revered as the ideal Elizabethan...

The Schmalkaldic War (1546-1547) was fought between the Protestant Schmalkaldic League and the Catholic armies under Charles V, Holy Roman Emperor, who, having failed to achieve religious unity of his subjects at the Diet of Augsburg in 1530...

The Declaration of Pillnitz was a joint statement issued on 27 August 1791 by Leopold II, Holy Roman Emperor (r. 1790-1792) and King Frederick William II of Prussia (r. 1786-1797). The declaration appealed to all European powers to unite...

Khotyn fortress is a complex of fortifications situated on the hilly right bank of the Dniester in Khotyn, Ukraine. It consists of a 13th-century stronghold and an 18th-century bastion surrounding it. It is one of the oldest preserved fortifications...

Romanos IV Diogenes ruled the Byzantine Empire from 1068 to 1071 CE. He was a military emperor, and his policies and campaigns served to shore up Byzantine defenses against the Seljuk Turks. However, in the aftermath of the Byzantine defeat...

Gaiseric (r. 428-478 CE, also known as Genseric and Geiseric) was the greatest king of the Vandals who remained undefeated from the time he took the throne until his death. He was probably born in 389 CE near Lake Balaton (present-day Hungary...

Manuel I Komnenos was emperor of the Byzantine Empire from 1143 to 1180 CE. Manuel continued the ambitious campaigns of his grandfather Alexios I and father John II to aggressively expand the boundaries of his empire. Manuel turned out to...

John II Komnenos “the Handsome” was emperor of the Byzantine Empire from 1118 CE to 1143 CE. John, almost constantly on campaign throughout his reign, would continue the military successes of his father Alexios I with significant victories...

The Black Death of 1347-1352 CE is the most infamous plague outbreak of the medieval world, unprecedented and unequaled until the 1918-1919 CE flu pandemic in the modern age. The cause of the plague was unknown and, in accordance with the...