Less than 60 years after the Norman Conquest, William's son, King Henry I was facing a succession crisis.
It was a crisis that would, ultimately, lead to a civil war and the first time in England's history that a woman would be proclaimed Queen of England.
This crisis ushered in a new royal dynasty...one that was to rule England for over 300 years...the Plantagenets.
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Ultimately, the Plantagenets would tear themselves apart in the Wars of the Roses but this is the story of their founder and his wayward sons.
Henry II, who ruled from the Scottish border to the Pyrenees.
This fiery king was responsible for the murder of his own Archbishop of Canterbury and then a series of wars with his sons.
One of those sons, was to become one of England's most famous warrior kings, Richard I (the Lionheart).