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House. Welf. Father. Henry IX, Duke of Bavaria. Mother. Wulfhilde of Saxony. Welf VI (1115 – 15 December 1191) was the margrave of Tuscany (1152–1162) and duke of Spoleto (1152–1162), the third son of Henry IX, Duke of Bavaria, and a member of the illustrious family of the Welf (House of Guelph).
Welf VI was the margrave of Tuscany (1152–1162) and duke of Spoleto (1152–1162), the third son of Henry IX, Duke of Bavaria, and a member of the illustrious family of the Welf.
Welf VI. remained tied to the Welf power center of Altorf (Weingarten)-Ravensburg until his death in 1191. The son of his older brother, Heinrich the Lion (1129-1195), outlived Welf VI. by only about four years. Consequently, duke Welf VI., under Heinrich the Lion, was the senior member of the Welf House.
The House of Welf (also Guelf or Guelph) is a European dynasty that has included many German and British monarchs from the 11th to 20th century and Emperor Ivan VI of Russia in the 18th century. The originally Franconian family from the Meuse-Moselle area was closely related to the imperial family of the Carolingians .
- 11th century
The Historia Welforum is an anonymous Latin prose chronicle of the House of Welf written around 1170.[1] The original covers the period c. 825–1167, but continuations bring it down to 1208. Because two manuscript copies originate in Weingarten (Altdorf), the work is sometimes known as the Historia Welforum Weingartensis or Chronica Altorfensium.[2]
Henry was the second son of Duke Welf I of Bavaria (died 1101) from his marriage with Judith, [1] daughter of Count Baldwin IV of Flanders. As a young man, he administered the family's Este property south of the Alps. Through his marriage to Wulfhilde, daughter of Duke Magnus of Saxony, [1] about 1095, he acquired part of the Billung estates ...
The tangent function has period π. f(x) = Atan(Bx − C) + D is a tangent with vertical and/or horizontal stretch/compression and shift. The cotangent function has period π and vertical asymptotes at 0, ± π, ± 2π ,.... The range of cotangent is ( − ∞, ∞), and the function is decreasing at each point in its range.
