Radbot of Klettgau in the context of "Graf"

The House of Habsburg (/ˈhæpsbɜːrɡ/; German: Haus Habsburg, lit. 'House of the Hawk's hill' [haʊs ˈhaːbsbʊrɡ] ), also known as the House of Austria, was one of the most powerful dynasties in the history of Europe and Western civilization. They were best known for ruling vast realms throughout Europe and the Americas during the Middle Ages and early modern period, including the Holy Roman Empire and Spain.

The house takes its name from Habsburg Castle, a fortress built in the 1020s in present-day Switzerland by Radbot of Klettgau, who named his fortress Habsburg. His grandson Otto II was the first to take the fortress name as his own, adding "Count of Habsburg" to his title. In 1273, Count Radbot's seventh-generation descendant, Rudolph, was elected King of the Romans. Taking advantage of the extinction of the Babenbergs and of his victory over Ottokar II of Bohemia at the Battle on the Marchfeld in 1278, he appointed his sons as Dukes of Austria and moved the family's power base to Vienna, where the Habsburg dynasty gained the name of "House of Austria" and ruled until 1918.

Werner I, Bishop of Strasbourg (ca. 975/980-1028) served from 1002 until his death on 28 October 1028. Werner I may have been one of six sons of Lanzelin of Klettgau, and also the brother of Radbot of Klettgau, a founder of the Habsburg dynasty. However, the sources that identify Werner with this Habsburg lineage are apocryphal, and therefore his connection to the family has been questioned.

He was close to the later German Emperor Henry II, whom he helped to be elected king (1002). As a consequence of the imperial favor this brought him, he was given control of the Abbey of St. Stephen in Strasbourg in 1003 and the Abbey of Schwarzach (Bavaria) in 1014. He further received privileges to hunt, procure lumber, and exercise other rights in certain undeveloped lands (known as a Wildbann) in Alsace in 1017. Often found in the emperor's entourage, Werner fought for him against King Rudolf III of Burgundy around 1020.

Later he was a supporter of Emperor Conrad II and accompanied him to his imperial coronation in Rome in 1027, then as a marriage broker envoy to Constantinople.

He may have had a part in the foundation of the Muri Monastery (though the source for this connection is potentially untrustworthy) and appears to have contributed to the rebuilding and expansion of the Strasbourg cathedral. Although Werner is attested in the 'Will of Bishop Wernher of Strassburg' as an early Habsburg, this document purported to be written in 1027 when it was actually written around 1085. On the other hand, in the Acta Murensia he is listed as a member of Lorraine Ducal House.

Werner I, Count of Klettgau was a nobleman and an early member of the House of Habsburg. He was an ancestor of King Rudolph I of Germany.

Werner was sometimes called Werner the Pious. His father was Radbot of Klettgau, and his mother was Ida de Lorraine (also known as Ita von Lothringen), who was the daughter of Frederick I, Duke of Upper Lorraine and Beatrice of France.