Reginald I | |
|---|---|
| Count of Bar | |
| Born | c. 1080 |
| Died | 10 March 1149 Mediterranean Sea |
| Noble family | House of Montbéliard |
| Spouse | Gisele of Vaudémont |
Issue | Reginald II of Bar |
| Father | Theodoric I of Montbéliard |
| Mother | Ermentrude of Bourgogne |
Reginald I (also called "the One-eyed", Reinald I, Renaud I; c. 1080 – 10 March 1149) was Count of Bar (1105–1149). Barrois, during the Middle Ages, was the territory of the counts and dukes of Bar, in the eastern part of present-day France, bordering Lorraine.
He was the son of Count Theodoric I of Montbéliard and Ermentrude, daughter of Count William I of Burgundy.
Reginald's first wife is unknown. He later married Gisele de Vaudémont, widow of Count Rainard III of Toul and daughter of Count Gerard I of Vaudémont and his wife Heilwig von Egisheim. Reginald and Gisele had eight children:
Reginald was one of the leaders of the Second Crusade in 1145. He was drowned somewhere in the Mediterranean Sea on his return voyage to Europe on or before 10 March 1149.
Reginald I of Bar succeeded Theodoric II of Bar (r. 1092–1105) who was succeeded in turn by Reginald II of Bar (r. 1150–1170) in 1150.