Theodoric I (ca. 1045 – 2 January 1105) was a Count of Montbéliard, Count of Bar and lord of Mousson

Mousson

Mousson is a commune in the Meurthe-et-Moselle department in north-eastern France....

 (as Theodoric II) and Count of Verdun

Count of Verdun

The counts of Verdun, now in eastern France, were often during the Middle Ages rulers of Lorraine; the descendants of the early counts were also margraves in Tuscany and Latin rulers in the Latin East after the First Crusade....

. He was the son of Louis de Scarpone, Count of Montbéliard, and Sophie

Sophie of Bar

Sophie of Bar was a daughter of Frederick II, Duke of Upper Lorraine and Mathilda of Swabia...

, Countess of Bar and Lady of Mousson.

After his father's death, he claimed the estate of the Duchy of Lorraine, which his father had already claimed. The claim was dismissed by Emperor Henry IV

Henry IV, Holy Roman Emperor

Henry IV was King of the Romans from 1056 and Holy Roman Emperor from 1084 until his forced abdication in 1105. He was the third emperor of the Salian dynasty and one of the most powerful and important figures of the 11th century...

, confirming the duchy to Theodoric the Valiant. In retaliation, he ravaged the diocese of Metz

Diocese of Metz

The Roman Catholic Diocese of Metz is a Diocese of the Latin Rite of the Roman Catholic church in France. In the Middle Ages it was in effect an independent state, part of the Holy Roman Empire, ruled by the bishop who had the ex officio title of count. It was annexed to France by King Henry II in...

, but he was defeated by Adalbéron III, bishop of Metz, and the Duke of Lorraine Theodoric the Valiant. Reconciled with the Church, he founded an abbey in 1074 in Haguenau

Haguenau

-Economy:The town has a well balanced economy. Centuries of troubled history in the buffer lands between France and Germany have bequeathed to Haguenau a rich historical and cultural heritage which supports a lively tourist trade. There is also a thriving light manufacturing sector centred on the...

 and rebuilt the church at Montbéliard in 1080. He did not participate at the Council of Clermont

Council of Clermont

The Council of Clermont was a mixed synod of ecclesiastics and laymen of the Catholic Church, which was held from November 18 to November 28, 1095 at Clermont, France...

 in 1095, or the Crusades

Crusades

The Crusades were a series of religious wars, blessed by the Pope and the Catholic Church with the main goal of restoring Christian access to the holy places in and near Jerusalem...

, but rather sent his son Louis in the Crusades. In 1100, the Bishop of Verdun gave the county to Thierry for life, but the relationship between the spiritual and temporal powers were turbulent.

He married Ermentrude of Burgundy (1055–1105), daughter of William I

William I, Count of Burgundy

William I , called the Great , was Count of Burgundy and Mâcon from 1057 to 1087. He was a son of Renaud I and Alice of Normandy, daughter of Richard II, Duke of Normandy...

, Count of Burgundy, and Stephanie, in 1065 and had the following issue:

• Theodoric II (1081–1163), Count of Montbéliard
• Louis, who became a crusader, returned in 1102 and was assassinated in 1103
• Frederick I († 1160), Count of Ferrette and Altkirch
• Reginald I (1090–1150), Count of Bar and lord of Mousson
  Mousson
  Mousson is a commune in the Meurthe-et-Moselle department in north-eastern France....
  
  
• Stephen (†1162), bishop of Metz
• William, who died before 1105
• Hugh, cited in 1105, probably religious, because he did not share his father's possessions
• Gunthilde (†1331), abbess of Biblisheim
  Biblisheim
  Biblisheim is a commune in the Bas-Rhin department in Alsace in north-eastern France.-References:*...
  
  
• Agnes, married in 1104 (†1136)