You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "What nickname was sometimes applied to the King who signed a treaty with the men of Kent at the site of Stone Castle ?" whose answer is William the Bastard.
Each document should contain about 30 words, and these documents should contain useful information.

Query: King who signed a treaty with the men of Kent at Stone Castle
Useful Output:

Doc 1: Edward I (17/18 June 1239 – 7 July 1307), also known as Edward Longshanks and the Hammer of the Scots (Latin: Malleus Scotorum), was King of England from 1272
Doc 2: It was built between 1135 and 1140 on the site where William the Conqueror signed a treaty with the men of Kent in 1067. It was owned by the Wiltshire
Doc 3: It's the legend of how the men of Kent faced down William the Conqueror after the Norman conquest of England. The story goes that after the
Doc 4: Kenilworth was an early Tudor Palace of the first order. Despite this, on 6th March 1553, Edward VI signed over the castle to the Duke of Northumberland.
Doc 5: It is known that in King Alfred's time there was a settlement at Great Chart under the ownership of the Archbishop of Canterbury. Interestingly, there has been