Alp Arslan was the second Sultan of the Seljuq Empire and great-grandson of Seljuq, the eponymous founder of the dynasty. His real name was Muhammad bin Dawud Chaghri, and for his military prowess, personal valour, and fighting skills he ob...

Matilda of Flanders was the wife of William the Conqueror and, as such, Queen consort of the Kingdom of England. She bore William nine children, including two kings, William II and Henry I. Matilda, or Maud, was the daughter of Baldwin V...

Malcolm III was King of Scots from 1058 to 1093. He was later nicknamed "Canmore" ("ceann mòr", Gaelic for "Great Chief": "ceann" denotes "leader", "head" (of state) and "mòr" denotes "pre-eminent", "great", and "big"). Malcolm's long reign...

Roger I (Roger Guiscard), c.1031-1101, Norman conqueror of Sicily; son of Tancred de Hauteville. He went to Italy in 1058 to join his brother, Robert Guiscard, in conquering Apulia and Calabria from the Byzantines. Between 1061 and 1091 he...

John XIX (born ? in Rome, died October 1032), was Pope from 1024 to 1032. He succeeded his brother, Pope Benedict VIII (1012–24), both being members of the powerful house of Tusculum. When elected Pope John XIX he was an unordained layman....

Anselm of Canterbury was a Benedictine monk, an Italian medieval philosopher, theologian, and church official who held the office of Archbishop of Canterbury from 1093 to 1109. Called the founder of scholasticism, he is famous as the origin...

Urban is best known for starting the First Crusade. Urban's crusading movement took its first public shape at the Council of Piacenza, where in March 1095 Urban received an ambassador from the Byzantine emperor Alexius I Comnenus, asking fo...

Shlomo Yitzchaki, today generally known by the acronym Rashi, was a medieval French rabbi and author of a comprehensive commentary on the Talmud and commentary on the Tanakh. Acclaimed for his ability to present the basic meaning of the tex...

Alfonso VI, nicknamed the Brave (El Bravo) or the Valiant, was King of León from 1065, king of King of Castile and de facto King of Galicia from 1072, and self-proclaimed "Emperor of all Spain". Much romance has gathered around his name. Al...

Raymond IV of Toulouse sometimes called Raymond of St Gilles was Count of Toulouse, Duke of Narbonne, and Margrave of Provence and one of the leaders of the First Crusade. He was a son of Pons of Toulouse and Almodis de La Marche. He receiv...

The "Wujing Zongyao" (literally "Collection of the Most Important Military Techniques") was the first book in history to record the written formulas for gunpowder solutions containing saltpetre, sulphur, and charcoal, along with many added...

Rodrigo (or Ruy) Díaz de Vivar, nicknamed El Cid Campeador, was a Castilian military and political leader in medieval Spain. Born of the minor nobility, El Cid was educated in the royal Castilian court and became an important general and ad...

Saint Margaret of Scotland, also known as Margaret of Wessex, was an English princess and a Scottish queen. Margaret was sometimes called "The Pearl of Scotland". Born in exile in the Kingdom of Hungary, she was the sister of Edgar Ætheling...

Omar Khayyam was a Persian mathematician, astronomer, philosopher, and poet. He was born in Nishabur, in northeastern Iran, and spent most of his life near the court of the Karakhanid and Seljuq rulers in the period which witnessed the Firs...

Peter the Hermit, French religious leader. In 1095 he was a very successful preacher of the First Crusade, and he led one of its bands. In 1096 he reached Constantinople with his undisciplined followers; when they arrived in Asia Minor, Pet...