For codepage, see CP850. Year 850 (DCCCL) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar. Events By place Europe February 1 – King Ramiro I dies in his palace at Santa María del Naranco (near Oviedo), after an 8-year reign. He is succeeded by his son Ordoño I, as ruler of Asturias. Danish Viking raiders, led by King Rorik, conquer Dorestad and Utrecht (modern-day Netherlands). Emperor Lothair I recognizes him as ruler of most of Friesland. King Louis II, the eldest son of Lothair I, is crowned joint emperor by Pope Leo IV at Rome, and becomes co-ruler of the Middle Frankish Kingdom. Britain King Kenneth I (also called Kenneth MacAlpin) of Alba (modern Scotland) invades Northern Northumbria during the period of 850–858, burning Dunbar and Melrose. The Pillar of Eliseg is erected by King Cyngen ap Cadell of Powys (Wales), as a memorial to his great-grandfather Elisedd ap Gwylog (or Eliseg) (approximate date). Japan May 6 – Emperor Ninmyō dies after a 17-year reign. He is succeeded by his son Montoku, as the 55th emperor of Japan. India It is hypothesized that sometime around 850 a group of Buddhist pilgrims travelling through a valley near Roopkund (modern India) were killed when caught out in the open in a sudden hailstorm. Their remains were discovered in 1942. Mesoamerica Uxmal becomes the capital of a large state in the Puuk hills region of northern Yucatán (modern Mexico). The city is connected by causeways (sakbe) to other important Puuk sites, such as K'abah, Sayil, and Labna (approximate date). By topic Food and Drink Coffee is discovered (according to legend) by the Ethiopian goatherder Kaldi in East Africa, who notices that his goats become energetic after chewing the red berries from certain wild bushes (approximate date). Religion April 22 – Gunther becomes archbishop of Cologne (modern Germany). June 18 – Perfecto, a Christian priest in Muslim Córdoba, is executed (beheaded) after he refuses to retract numerous insults he made about the prophet Muhammad. Births June 27 – Ibrahim II, emir of the Aghlabids (d. 902) Abu Zayd al-Balkhi, Muslim mathematician (d. 934) Adelaide, queen of the West Frankish Kingdom (or 853) Aribo of Austria, Frankish margrave (approximate date) Arnulf of Carinthia, king of the East Frankish Kingdom (d. 899) Berno of Cluny, Frankish abbot (approximate date) Du Guangting, Chinese Taoist priest and writer (d.