出典:Wikipedia
出典:『Wikipedia』 (2011/05/11 10:12 UTC 版)
Duffield Frith was, in medieval times, an area of Derbyshire in England, part of that bestowed upon Henry de Ferrers (or Ferrars) by King William, controlled from his seat at Duffield Castle. From 1266 it became part of the Duchy of Lancaster and from 1285 it was a Royal Forest with its own Forest Courts.