Fergus of Galloway married to David's older sister, Edith (died 1118), a union which closely bound him to the Scottish royal house. For as long as Henry I lived, relations between him and David remained harmonious. When the former died in 1135, however, the peace between the neighbouring realms was shattered when his nephew, Stephen of Blois, Count of Boulogne and Mortain (died 1154), successfully seized the throne. Before the end of the year, the Scots surged forth and seized Carlisle and Cumberland before peace was restored. Relations broke down the following year, and the Scots again invaded in 1137, seizing Northumberland, and
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