[2] The leaders of the barons were Robert Ferrers, Earl of Derby; Baldwin Wake, Lord of Chesterfield; and John d'Ayville.

A reference also exists to explain how "the men of Brampton" (a suburb of Chesterfield) rushed to the church at the time of the battle and defended that part of the wall for which they were responsible.

Wykes also explains how Ferrers was stricken by gout at the time of the battle and that the barons' leader was "taken ignobly".

According to the chronicles of Walter of Guisborough,[5] John d'Ayville forced his way through the enemy and unhorsed Sir Gilbert Haunsard with his lance, before wounding several others and making his escape.

Following his capture, Robert Ferrers was taken "in irons"[3] to London and, at the Westminster parliament later that year, was "totally disinherited".