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
Succession to the French throne association of the eldest son to the kingship continued for two more generations, with Philip II Augustus being the last king so crowned. Henry I became sole ruler on his father's death in 1031. The succession, however, was hotly contested by his younger brother Robert. Constance of Arles, Henry’s mother, preferred to place her younger son, Robert, on the throne. She allied herself with one of the more powerful counts of the time, Odo II, Count of Blois. This alliance was particularly worrisome for Henry I. Odo II of Blois was a very powerful lord and had warred against Henry’s