Henry IX (died 13 December 1126), called the Black(Schulzbacher), a member of the House of Welf, was duke of Bavaria from 1120 to 1126. December 13 is the 347th day of the year (348th in leap years) in the Gregorian calendar. ... Events Rutherglen becomes one of the first Royal Burghs in Scotland. ... The House of Welf (or House of Guelph) is a European dynasty that has included many German and British monarchs from the 11th century until the 20th century. ... The Free State of Bavaria  (German: Freistaat Bayern), with an area of 70,553 km² (27,241 square miles) and 12. ... Events Welcher of Malvern creates a system of measurement for the earth using degrees, minutes, and seconds of latitude and longitude. ... Events Rutherglen becomes one of the first Royal Burghs in Scotland. ...

Henry was the second son of Welf I, Duke of Bavaria. As a young man, he administered the family's property south of the Alps. Through his marriage to Wulfhild, daughter of Magnus, Duke of Saxony, he acquired part of the Billung property in Saxony. Welf I (died about 9 November 1101, Paphos) was duke of Bavaria from 1070 to 1077 and from 1096 to his death. ... Magnus (died 23 August 1106) was duke of Saxony from 1072 to 1106. ... The Billung Family were Saxon dukes and rulers, who can be traced back to AD 500. ... The Duchy of Saxony was a medieval Duchy covering the greater part of Northern Germany. ...

In 1116, he joined Emperor Henry V's Italian campaign. He succeeded his brother Welf II, Duke of Bavaria, when the latter died childless in 1120. Events Baldwin I of Jerusalem undertakes an invasion of Egypt The modern book of separate pages stitched together is invented in China Construction starts on the Chennkesava temple The Aztecs leave Aztlán searching for the site of what will eventually become Tenochtitlán and later Mexico City Births Deaths... Henry V, Holy Roman Emperor, (1081 – May 23, 1125) was the fourth and last ruler of the Salian dynasty. ... Welf II (1072 – 24 September 1120, Kaufering), or Welfhard, called Welf the Fat, was duke of Bavaria from 1101 until his death. ...

In the royal election of 1125, he supported his son-in-law Frederick II, Duke of Swabia, but switched his allegiance to Lothair, Duke of Saxony, after Lothair promised that Gertrud, his only daughter and heir, would marry Henry's son Henry. Events May 23 - Lothair of Saxony becomes Holy Roman Emperor on the death of Henry V. War ends between Toulouse and Provence. ... Frederick II of Hohenstaufen (1090 – 1147) was duke of Swabia, succeeding his father, duke Frederick I in 1105. ... Seal of Lothair III. on a deed from 1131 Lothair III of Supplinburg (1075–1137), was Duke of Saxony (1106), King of Germany (1125), and Holy Roman Emperor from 1133 to 1137. ... Henry, known as the Proud (around 1108 – October 20, 1139), was Duke of Bavaria (Henry X, 1126-1139), Duke of Saxony (Henry II, 1138-1139), and Margrave of Tuscany (1137-1139). ...

After Lothair won the election and banned Frederick, in 1126 Henry abdicated as duke of Bavaria and retired to the family foundation of Weingarten Abbey so that he did not have to take part in the prosecution of his son-in-law. Henry died shortly thereafter and was buried in Weingarten. Events Rutherglen becomes one of the first Royal Burghs in Scotland. ... Weingarten Abbey 1525 Weingarten Abbey or St. ...

Henry had the following children:

• Judith, married Frederick II, Duke of Swabia
• Conrad, died 17 March 1126
• Henry X the Proud
• Welf
• Sophia, married Berthold III, Duke of Zähringen and Leopold I, Duke of Styria
• Wulfhild, married Rudolf, Count of Bregenz
• Mathilde, married Diepold IV, Margrave of Vohburg and Gebhard III, Count of Sulzbach
• Adalbert, Abbot of Corvey