The term "Norman kings" refers to the rulers from the Normandy region of France who played a significant role in European history, particularly during the 11th and 12th centuries. The most notable of these kings is William the Conqueror, who became the King of England after his victory at the Battle of Hastings in 1066. This event marked the beginning of Norman rule in England and led to significant cultural and political changes. Norman kings were known for their strong military leadership and administrative reforms. They established feudal systems, built impressive castles, and promoted the use of the French language in governance. Their reigns contributed to the development of medieval Europe, influencing the structure of kingdoms and the relationships between nobility and commoners.