Theodoric I (born 957, died between 11 April 1026/7 and 12 January 1027) was the count of Bar and duke of Upper Lorraine from 978 to his death. He was the son and successor of Frederick I Duke of Upper Lorraine and Beatrice de France, daughter of Hugh the Great, count of Paris, and sister to the French king Hugh Capet. His mother was the regent until 987. In 985, he joined the other Lorrainer lords, his including his cousin Godfrey the Prisoner, in trying to repel King Lothair of France's invasion: but at Verdun, he was captured.

He married Richilde Luneville Metz , daughter of Folmar III, Count of Bliesgau, Metz and Bertha of Trier in 985 They had the following children:

• Adalbero
• Hildegard, married Fulk III in 1005
• Sundgau Hildegard of Lorraine (985-1046) 1 (from Luneville Richilde Metz )
• Adela (b. c.990), married Walram I, count of Arlon
• Frederick II, Count of Bar (995-1028) 1 (from Luneville Richilde Metz )Adela (b. c.990), married Walram I, count of Arlon

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. He was captured a second time in 1018 in combat with Burgundy, but overcame Odo II of Blois, also count of Meaux, Chartres, and Troyes (later Champagne). In 1019, he associated his son, Frederick, in the government with him. He briefly opposed the Emperor Conrad II, Henry's successor, but soon joined his supporters.

Notes

• It is also known as Thierry I, Duke of Lorraine 2 and Thierry, Count of Bar 1

References

1 http://genealogiequebec.info/testphp/info.php?no=169703

2 http://en.wikipedia.org/wiki/Thierry_I,_Duke_of_Upper_Lorraine