Adelaide of Burgundy
Adelaide of Burgundy (c. 1233 – 23 October 1273), daughter of Hugh IV of Burgundy, married Henry III, Duke of Brabant, in 1251. After his death in 1261 she ruled as regent for their young son Henry, despite opposition from a cousin of her husband.
In 1262 she founded Val-Duchesse, the Low Countries' first Dominican priory for women. When her eldest son proved unfit to rule, she replaced him in 1267 with her second son John, handing over power in 1268. She died in 1273.