Input (grade 11): William I (about 1027 or 1028 9 September 1087), better known as William the Conqueror (), was Duke of Normandy from 1035 and King of England from late 1066 to his death.
Output (grade 4): William I of England (c. 1027 - September 9 1087), also known as William the Conqueror, was King of England from 1066 until 1087.