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
Henry V, Count Palatine of the Rhine Brittany in April 1203, Henry effectively became the heir of his maternal uncle John Lackland to the English throne, this ended though when John's son (the future king Henry III) was born in October 1207. After he inherited further significant properties in Saxony from his brother William in 1213, Henry ceded the Palatinate to his son Henry the Younger and moved north. After his son's early death the next year, he left his Welf properties to his nephew, William's son Otto the Child, who became the first Duke of Brunswick-Lüneburg in 1235. Henry died in 1227 and is entombed in