A Verderer was a crown officer of significant local standing, mandated by forest law to maintain the spiritual and physical integrity of the Sovereign's hunting grounds. Their primary duty involved the preservation of 'vert' (the forest's green vegetation and canopy) and 'venison' (the deer and protected game). Unlike many forest officials who were appointed by the Warden, Verderers were uniquely elected by the freeholders of the county in the Court of the Shire, following the issuance of a writ 'de verderario eligendo'. This elective process mirrored that of a coroner, ensuring a degree of independence from the purely extractive interests of the Crown.
In their judicial capacity, Verderers presided over the Courts of Attachment (or Woodmote) and the Swanimote. They were charged with enrolling the presentments of Foresters and Regarders regarding encroachments, known as purprestures, or illegal hunting. In the hierarchy of the Royal Household and provincial administration, the Verderer acted as a crucial check on the arbitrary power of Foresters, mediating between the draconian Forest Law and the common law rights of the local populace.