The Siege of Constantinople (1204) destroyed parts of the capital of the Byzantine Empire as it was captured by Crusaders. After the capture the Latin Empire was founded and Baldwin of Flanders was crowned Emperor Baldwin I of Constantinopl...

Güyük was the third Great Khan of the Mongol Empire. He was the eldest son of Ögedei Khan, grandson of Genghis Khan, and reigned from 1246 to 1248. Genghis Khan's sons and grandsons were haunted by alcoholism, a vice that Genghis himself ha...

The Mongol Empire was the largest contiguous empire in world history and for some time was the most feared in Eurasia. It was the product of Mongol unification and Mongol invasions, which began with Temujin being proclaimed ruler in 1206, e...

Saint Elizabeth of Hungary was a princess of the Kingdom of Hungary, Countess of Thuringia, Germany and a greatly-venerated Catholic saint. Elizabeth was married at the age of 14, and widowed at 20. She then became one of the first members...

Henry III was the son and successor of John as King of England, reigning for fifty-six years from 1216 to his death. His contemporaries knew him as Henry of Winchester. He was the first child king in England since the reign of Æthelred the...

Rumi was a 13th-century Persian poet, jurist, Islamic scholar, theologian, and Sufi mystic. Rumi's influence transcends national borders and ethnic divisions: Iranians, Tajiks, Turkish, Greeks, Pashtuns, other Central Asian Muslims, and the...

James I the Conqueror was the King of Aragon, Count of Barcelona, and Lord of Montpellier from 1213 to 1276. His long reign saw the expansion of the Crown of Aragon on all sides: into Valencia to the south, Languedoc to the north, and the B...

Möngke Khan, also transliterated as Mongke, Mongka, Möngka, Mangu or Mangku, was the fourth Great Khan of the Mongol Empire from July 1, 1251 – August 11, 1259. He was the first Great Khan from the Toluid line. Under Möngke, the Mongols con...

Pope Nicholas III, a Roman named Giovanni Gaetano Orsini; successor of John XXI. As a cardinal he made a great reputation in diplomacy, and he was a close confidant of popes for 30 years. He was elected pope after a six-month delay. Nichola...

Louis IX, commonly Saint Louis, was King of France from 1226 until his death. He inherited the throne at age 12. His mother served as regent until 1234, helping to subdue rebellious barons and Albigensian heretics (Cathari). Louis led a Cru...

Roger Bacon was an English philosopher and Franciscan friar who placed considerable emphasis on the study of nature through empirical methods. He is sometimes credited (mainly since the nineteenth century) as one of the earliest European ad...

Magna Carta (Latin for "Great Charter", literally "Great Paper"), also called Magna Carta Libertatum, was an English charter originally issued in 1215. Magna Carta is the most significant early influence on the long historical process that...

Kublai Khan was the fifth Khagan (Great Khan) of the Ikh Mongol Uls (Mongol Empire), reigning from 1260 to 1294, and the founder of the Yuan Dynasty, a division of the Mongol Empire. Kublai was the fourth son of Tolui and a grandson of G...

Hulagu Khan was a Mongol ruler who conquered much of Southwest Asia. Son of Tolui and the Kerait princess Sorghaghtani Beki, he was a grandson of Genghis Khan, and the brother of Arik Boke, Möngke Khan and Kublai Khan. Hulagu's army greatly...

Rudolf I, First German king (1273 – 91) of the Habsburg dynasty. He inherited lands in Alsace, the Aargau, and Breisgau and extended his territory by marriage and through negotiation. Crowned king in 1273, he was recognized by Pope Gregory...