"Licence for William Gascoigne, knight, or his heirs to crenellate their manor of Gaukethorpe, co. York, and to enclose and impark 200 acres of land, 100 acres of meadow, 60 acres of pasture and 40 acres of wood of their demense lands in Gaukethorpe, Wardeley and Harwod and 1,000 acres of land, 400 acres of meadow, 200 acres of pasture and 600 acres of wood in Thwhouse, Lofthouse, Wardeley, Harwod and Wyke of their demense lands, provided that they be not within the metes of the king's forest."
Granted at Westminster, by privy seal.
Also to impark a large area (2600 acres) of demense lands
Original source is
(In fact, the original source given is usually a transcription/translation of what are precious medieval documents not readily availably. It should be noted that these transcription/translations often date to the nineteenth or early twentieth centuries and that unwitting bias of transcribers may affect the translation. Care should also be taken to avoid giving modern meaning to the medieval use of certain stock words and terms.)
Significant later source are;
More details about licences to crenellate can be found here.
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