This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
In May 1152, a nineteen year old count of Anjou married a thirty year old duchess whose first marriage, to the king of France, had just been annulled. Henry gained nothing from the match on paper that a chronicler of the time thought worth recording as remarkable. What he actually gained was Aquitaine, the largest single duchy in France, added to Normandy and Anjou he already held and, two years later, the crown of England itself. No twelfth century ruler had assembled a comparable span of territory by inheritance and marriage alone, and no contemporary word existed for what he had built; historians later supplied one, the Angevin Empire, and the label has stuck because nothing else fits a realm that ran from the Scottish border to the Pyrenees while answering to no single law, currency or even language. Henry did not rule this empire from a capital. He ruled it from the road, crossing the Channel dozens of times in a thirty five year reign, holding courts in Rouen, Angers, Winchester and Poitiers as the business of the moment required, an itinerant kingship that was itself a kind of governing technology: no baron on either side of the sea could count on Henry being absent for long. He used the same restless energy to rebuild what King Stephen's civil war had broken, sending royal justices out on circuit to hear cases in the king's name rather than a local lord's, a practice that hardened over the following century into the common law. It was this same instinct for royal reach that put him on a collision course with Thomas Becket, his own former chancellor and, from 1162, his archbishop of Canterbury, over whether clergy accused of crimes should answer to the king's courts or the church's alone. Henry lost that particular argument in the worst way a king can lose one: four of his knights murdered Becket inside his own cathedral in December 1170, apparently on the strength of a royal outburst nobody could later agree the exact wording of, and Henry did public penance for it, barefoot and whipped by monks, in 1174. The empire he built did not outlive him intact for even one generation, and the reason was not a foreign enemy. It was his own household. Eleanor backed their sons against him in the Great Revolt of 1173 and 1174 and spent over a decade afterward in confinement for it; Henry the Young King, Richard and Geoffrey each rebelled against their father at least once, generally with the king of France quietly supplying the opportunity; and Henry died at Chinon in July 1189 having just learned that his last loyal son, John, had joined the others. The marriage that built the empire in one generation could not, on its own, hold it together for a second.