Question: What nickname was sometimes applied to the King who signed a treaty with the men of Kent at the site of Stone Castle ?
Sentence (from "William the Conqueror"): William I (c. 1028 – 9 September 1087), usually known as William the Conqueror and sometimes William the Bastard, was the first Norman King of England, reigning from 1066 until his death in 1087.
Relevant evidence: Yes