John and William Merfold were yeomen brothers in Sussex, England, in the mid 15th-century. Both were indicted in 1451 for publicly inciting the killing of the nobility and the clergy and the deposition of King Henry VI. They also advocated rule by common people. Minor uprisings spread throughout Sussex until authorities intervened and four yeomen were hanged.

Sussex is an area within South East England which was historically a kingdom and, later, a county. It includes the ceremonial counties of East Sussex and West Sussex.