England in the Middle Ages son, William, died aboard the "White Ship" disaster of 1120, sparking a fresh succession crisis: Henry's nephew, Stephen of Blois, claimed the throne in 1135, but this was disputed by the Empress Matilda, Henry's daughter. Civil war broke out across England and Normandy, resulting in a long period of warfare later termed the Anarchy. Matilda's son, Henry, finally agreed to a peace settlement at Winchester and succeeded as king in 1154. Henry II was the first of the Angevin rulers of England, so-called because he was also the Count of Anjou in Northern France. Henry had also acquired the huge
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