William I (died 16 April 963) is the first known member of the house of the Counts of

Weimar Weimar is a city in the state of Thuringia, Germany. It is located in Central Germany between Erfurt in the west and Jena in the east, approximately southwest of Leipzig, north of Nuremberg and west of Dresden. Together with the neighbouri ...

Life

William was first mentioned in a 949 deed as a count (''

Graf (feminine: ) is a historical title of the German nobility, usually translated as "count". Considered to be intermediate among noble ranks, the title is often treated as equivalent to the British title of "earl" (whose female version is "coun ...

'') in

Thuringia Thuringia (; german: Thüringen ), officially the Free State of Thuringia ( ), is a state of central Germany, covering , the sixth smallest of the sixteen German states. It has a population of about 2.1 million. Erfurt is the capital and larg ...

. Originating from the

Saalfeld Saalfeld (german: Saalfeld/Saale) is a town in Germany, capital of the Saalfeld-Rudolstadt district of Thuringia. It is best known internationally as the ancestral seat of the House of Saxe-Coburg and Gotha, Saxe-Coburg and Gotha branch of the S ...

region, he held large estates around Weimar,

Jena Jena () is a German city and the second largest city in Thuringia. Together with the nearby cities of Erfurt and Weimar, it forms the central metropolitan area of Thuringia with approximately 500,000 inhabitants, while the city itself has a popu ...

, and

Apolda Apolda () is a town in central Thuringia, Germany, the capital of the Weimarer Land district. It is situated in the center of the triangle Weimar–Jena–Naumburg near the river Ilm, c. east by north from Weimar. Apolda station lies on the Hall ...

, possibly stemming from late Duke Burchard of Thuringia, whose sons were expelled by King

Henry the Fowler Henry the Fowler (german: Heinrich der Vogler or '; la, Henricus Auceps) (c. 876 – 2 July 936) was the Duke of Saxony from 912 and the King of East Francia from 919 until his death in 936. As the first non-Frankish king of East Francia, he ...

in 913. He was probably married to a daughter of the

Babenberg The House of Babenberg was a noble dynasty of Austrian Dukes and Margraves. Originally from Bamberg in the Duchy of Franconia (present-day Bavaria), the Babenbergs ruled the imperial Margraviate of Austria from its creation in 976 AD until its e ...

duke

Poppo of Thuringia Poppo II or Boppo II (died after 906) was the Duke of Thuringia from 880 until his deposition in 892. Poppo, a Babenberg, was the younger brother of Henry of Franconia. They also had a younger brother named Egino. All three may have been the so ...

, margrave of the

Sorbian March The Sorbian March ( la, limes Sorabicus, german: Sorbenmark) was a frontier district on the eastern border of East Francia in the 9th through 11th centuries. It was composed of several counties bordering the Sorbs. The Sorbian March seems to hav ...

, who had been deposed by the

East Frankish East Francia (Medieval Latin: ) or the Kingdom of the East Franks () was a successor state of Charlemagne's Carolingian Empire, empire ruled by the Carolingian dynasty until 911. It was created through the Treaty of Verdun (843) which divided t ...

king

Arnulf Arnulf is a masculine German given name. It is composed of the Germanic elements ''arn'' "eagle" and ''ulf'' "wolf". The ''-ulf, -olf'' suffix was an extremely frequent element in Germanic onomastics and from an early time was perceived as a mere ...

in 892. William too appeared in the rank of a Thuringian

margrave Margrave was originally the medieval title for the military commander assigned to maintain the defence of one of the border provinces of the Holy Roman Empire or of a kingdom. That position became hereditary in certain feudal families in the Emp ...

. From 953 to 955, he and several Wettin counts joined the revolt of Duke

Liudolf of Swabia Liudolf ( – 6 September 957), a member of the Ottonian dynasty, was Duke of Swabia from 950 until 954. His rebellion in 953/54 led to a major crisis of the rising German kingdom. Liudolf was the only son of the Saxon duke Otto the Great, son a ...

against King

Otto the Great Otto I (23 November 912 – 7 May 973), traditionally known as Otto the Great (german: Otto der Große, it, Ottone il Grande), was East Frankish king from 936 and Holy Roman Emperor from 962 until his death in 973. He was the oldest son of Henr ...

, wherefore he was temporarily deposed and exiled to the court of Otto's brother Duke Henry of Bavaria. By 956, however, William was re-installed into his offices. He had at least three children: * William II (d. 1003), called the Great, succeeded his father as Count of Weimar, Duke of Thuringia from 1002 *Poppo *Sigbert {{DEFAULTSORT:William 01 of Weimar 963 deaths Year of birth missing House of Weimar 10th-century German nobility