Who made the castle?

Answer 1

The first castles were constructed by the French (not the Normans) during the late 9th and early 10th century in the chaos left behind by the collapse of the Carolingian empire. French barons began to erect motte and bailey castles to defend their own lands; these were also bases for offensive raids on other barons.

When the Normans (originally Norsemen/Vikings) were permitted to settle in the area of France that later became Normandy, they quickly adopted French ideas including mounted armoured knights, castle building and a strange version of the Old French language.

The Normans brought castle building to England when they invaded in 1066, but they learned the techniques from the French who had been doing it for almost two hundred years before that time.