History of Bristol Welsh estate and Robert of Caen became the first Earl of Gloucester, c. 1122. He is believed to have been responsible for completing Bristol castle. In 1135 Henry I died and the Earl of Gloucester rallied to the support of his sister Matilda against Stephen of Blois who had seized the throne on Henry's death. Stephen attempted to lay siege to Robert at Bristol in 1138 but gave up the attempt as the castle appeared impregnable. When Stephen was captured in 1141 he was imprisoned in the castle, but when Robert was captured by Stephen's forces, Matilda was forced to
Henry I of Ziębice The exact date of his death is unknown, although was certainly between 1366–1370. Henry I of Ziębice Henry I of Ziębice (; b. – d. aft. 8 August 1366), was a titular Duke of Ziębice from 1358 until his death. He was the second and youngest son of Nicholas the Small, Duke of Ziębice, by his wife Agnes, daughter of Herman Krušina of Lichtenberg. After his father's early death in 1358, Henry I and his older brother Bolko III succeeded him in the Duchy of Ziębice as co-rulers; however, because they are minor at that time, their mother, the Dowager