The Dering Roll is the oldest English roll of arms in its original form. Sir Edward Dering acquired the roll during the 17th century and modified it to include a fictitious ancestor of his own. It depicts the coats of arms of around a quarter of the English baronage during the era of Edward I. Emphasis was given to knights from Sussex and Kent, produced in Dover between 1270 and 1280 the document was designed to list the knights who owed feudal service there. It depicts 324 coats of arms.