The Angevin Empire describes the possessions of the Angevin kings of England who held lands in England and France during the 12th and 13th centuries. Its rulers were Henry II (ruled 1154–1189), Richard I (r. 1189–1199), and John (r. 1199–1216). The Angevin Empire is an early example of a composite state.

The Angevins of the House of Plantagenet ruled over an area covering roughly half of France, all of England, and parts of Ireland and Wales, and had further influence over much of the remaining British Isles. The empire was established by Henry II, as King of England, Duke of Normandy, Count of Anjou (from which the Angevins derive their name), as well as Duke of Aquitaine by right of his wife, and multiple subsidiary titles. Although their title of highest rank came from the Kingdom of England, the Angevins held court primarily on the continent at Angers in Anjou, and Chinon in Touraine.

Henry II (5 March 1133 – 6 July 1189), also known as Henry Curtmantle, Henry FitzEmpress or Henry Plantagenet. He ruled as King of England, Duke of Normandy and Aquitaine, Count of Anjou, Maine, and Nantes; at various times, he also partially controlled Scotland, Wales and the Duchy of Brittany. Before he was 40 he controlled England, large parts of Wales, the eastern half of Ireland and the western half of France (an area that would later come to be called the Angevin Empire).

More Info: en.wikipedia.org