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, Margrave of the Saxon Ostmark Henry I, Margrave of the Saxon Ostmark Henry I ( – 1103), called the Elder (), a member of the House of Wettin, was Count of Eilenburg as well as Margrave of the Saxon Eastern March (March of Lusatia) from 1081 and Margrave of Meissen from 1089 until his death. Henry was the son of the Wettin margrave Dedi I of Lusatia and his second wife Adela of Louvain, a granddaughter of Count Lambert I of Louvian and widow of Margrave Otto I of Meissen. His father ruled the Lusatian march since 1046; he was one of the nobles which