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: Nickname of William the Conqueror
Useful Output:

Doc 1: William the Bastard: why such a nickname? Descended from a line of powerful Scandinavian lords, William was born at Falaise Castle in 1027.
Doc 2: His decisive victory and subsequent reign gave him the nickname of 'William the Conqueror'. Learn more about Battle of Hastings here: brainly.
Doc 3: To answer the second part of your question: William is indeed called "bastardus" in contemporary sources. However, this refers to the fact that
Doc 4: For most speakers of French, the Conquérant's name is Guillaume whereas for English speakers, the Conqueror's given name is obviously William.
Doc 5: People probably didn't call William much of anything but William to his face, but those nicknames "conqueror" and "bastard" were promoted early