Beatrice I, Countess of Burgundy

Beatrice I (1143–1184) was the only child of Reginald III, Count of Burgundy, and inherited the county at his death in 1148. Her regent uncle William of Mâcon tried to seize her inheritance and imprisoned her; Frederick Barbarossa intervened and married her in 1156, ruling Burgundy jointly with her.

She accompanied Frederick on campaign and brought him Burgundian reinforcements at the siege of Crema in 1159. She was crowned empress in Rome by Antipope Paschal III in 1167, and queen of Burgundy at Vienne in 1178. She died in 1184; her son Otto I succeeded to her county.