Theodoric I was the count of Bar and duke of Upper Lorraine from 978 to his death. He was the son and successor of Frederick I

Frederick I, Duke of Upper Lorraine

Frederick I was the count of Bar and duke of Upper Lorraine. He was a son of Wigeric, count of Bidgau, also count palatine of Lorraine, and Cunigunda, and thus a sixth generation descendant of Charlemagne....

 and Beatrice, daughter of Hugh the Great

Hugh the Great

Hugh the Great or Hugues le Grand was duke of the Franks and count of Paris, son of King Robert I of France and nephew of King Odo. He was born in Paris, Île-de-France, France. His eldest son was Hugh Capet who became King of France in 987...

, count of Paris

Count of Paris

Count of Paris was a title for the local magnate of the district around Paris in Carolingian times. Eventually, the count of Paris was elected to the French throne...

, and sister to the French king Hugh Capet.

His mother was the regent

Regent

A regent, from the Latin regens "one who reigns", is a person selected to act as head of state because the ruler is a minor, not present, or debilitated. Currently there are only two ruling Regencies in the world, sovereign Liechtenstein and the Malaysian constitutive state of Terengganu...

 until 987. In 985, he joined the other Lorrainer lords, his including his cousin Godfrey the Prisoner

Godfrey I, Count of Verdun

Godfrey I , called the Prisoner or the Captive , sometimes the Old , was the count of Bidgau and Methingau from 959 and the count of Verdun from 963 to his death. In 969, he obtained the margravate of Antwerp and Ename...

, in trying to repel King Lothair of France

Lothair of France

Lothair , sometimes called Lothair IV, was the Carolingian king of West Francia , son of Louis IV and Gerberga of Saxony.-Regency:...

's invasion: but at Verdun

Verdun

Verdun is a city in the Meuse department in Lorraine in north-eastern France. It is a sub-prefecture of the department.Verdun is the biggest city in Meuse, although the capital of the department is the slightly smaller city of Bar-le-Duc.- History :...

, he was captured.

Like almost all the dukes of Lorraine until the Gallicisation of the region in the thirteenth century, Theodoric was loyal to the Holy Roman Emperors. In 1011, he aided Henry II in his war with Luxembourg

Luxembourg

Luxembourg , officially the Grand Duchy of Luxembourg , is a landlocked country in western Europe, bordered by Belgium, France, and Germany. It has two principal regions: the Oesling in the North as part of the Ardennes massif, and the Gutland in the south...

. He was captured a second time in 1018 in combat with Burgundy

Duchy of Burgundy

The Duchy of Burgundy , was heir to an ancient and prestigious reputation and a large division of the lands of the Second Kingdom of Burgundy and in its own right was one of the geographically larger ducal territories in the emergence of Early Modern Europe from Medieval Europe.Even in that...

, but overcame Odo II of Blois, also count of Meaux, Chartres

Chartres

Chartres is a commune and capital of the Eure-et-Loir department in northern France. It is located southwest of Paris.-Geography:Chartres is built on the left bank of the Eure River, on a hill crowned by its famous cathedral, the spires of which are a landmark in the surrounding country...

, and Troyes

Troyes

Troyes is a commune and the capital of the Aube department in north-central France. It is located on the Seine river about southeast of Paris. Many half-timbered houses survive in the old town...

 (later Champagne

Champagne (province)

The Champagne wine region is a historic province within the Champagne administrative province in the northeast of France. The area is best known for the production of the sparkling white wine that bears the region's name...

). In 1019, he associated his son, Frederick

Frederick II, Duke of Upper Lorraine

Frederick II , son of Thierry I and Richilde von Blieskastel, daughter of Folmar III, Count in Bliesgau; was the count of Bar and duke of Lorraine, co-reigning with his father from 1019....

, in the government with him. He briefly opposed the Emperor Conrad II, Henry's successor, but soon joined his supporters.

Family

He married Richilde, the daughter of Folmar III, count of Bliesgau

Bliesgau

The Bliesgau is a district of the Saarland in Germany. It is named for the River Blies, a tributary of the Saar River, and lies near the border with France....

 and Metz

Metz

Metz is a city in the northeast of France located at the confluence of the Moselle and the Seille rivers.Metz is the capital of the Lorraine region and prefecture of the Moselle department. Located near the tripoint along the junction of France, Germany, and Luxembourg, Metz forms a central place...

, in 985. They had the following children:

• Frederick
  Frederick II, Duke of Upper Lorraine
  Frederick II , son of Thierry I and Richilde von Blieskastel, daughter of Folmar III, Count in Bliesgau; was the count of Bar and duke of Lorraine, co-reigning with his father from 1019....
  
  , his successor
• Adela (b. c.990), married Walram I, count of Arlon
• Adalbero

He possibly had a daughter, Gisela, who married Gerard de Bouzonville and had a son, Gerard, Duke of Lorraine

Gerard, Duke of Lorraine

Gerard IV, Duke of Alsace was the count of Metz and Chatenois from 1047/1048, when his brother Duke Adalbert resigned them to him on becoming the Duke of Upper Lorraine. On Adalbert's death the next year, Gerard became duke and was so until his death...

.