I. Henry was born in 1068. Henry is brother of William Rufus. Henry was declared the Duke of Normandy by his brother. but Henry's goal was always to be the king of England.
But Henry could not initiate a rebellion against his brother because his brother was loved by the soldiers. Henry fought against France. And Henry took back the Normandy land that the French had already conquered. But the inhabitants of this land have begun rebellion against Henry. Henry ended this rebellion.
Confident on this, Henry began preparations for rebellion against his brother. But before the rebellion broke out, Henry was arrested by his brother and sentenced to jail.
But on the death of William Rufus in 1100, Henry was declared king of England by the English lords. Henry resolved his disagreements with the French during the kingdom.
Henry passed away in 1135.