‘The Duchy of Cornwall was established by Edward III in 1337 for his son. There is a landed estate (the Duchy) and a title (the Duke). Edward III was no doubt unconcerned about any legal duties that may attach to the Duchy; he had bigger fish to fry. In the 21st century, however, at least one knotty question of legal duty has surfaced.’
Panopticon, 5th April 2016
Source: www.panopticonblog.com