There might be many ways to approach genealogy. One guy in particular sought to trace back the male line of his Haydon family name. As the Butlers have Haydon ancestry, we can link into his efforts, and trace our line back to Robert DeBelleme, one of the more powerful Norman noblemen in the years just following William the Conqueror's Norman Invasion of England.
Here we have two charts. On the left we have the direct line of descent from Robert DeBelleme to Ebenezer Haydon, a New Englander who lived through the time of the Revolution. Below are some of Ebenezer's direct descendants, those that I've thus far linked into the tree, including all the modern Butlers.
Be ready to use your scroll bars...