In 1510 March 8, Robert Drury was granted, by Henry VIII, (In year 1 of his reign) a Royal licence to crenellate Hansted Hall [Hausted] (Hawstead Hall)

"Licence to impark 2,000 acres of land, and 50 acres of wood, in the parsihes of Hansted, Whepsted, Hornengserth, Great Nowton, Onhows, Buxhale, Harleston, Shelond, Rede, Chedbergh, Chevington, Hartest, Somerton, and Brokeley, Suff., with free warren and fishery there, and in Norf., Suff., and Bucks; - also licence to enclose with walls and towers his manors of Hansted Hall, Buknahams, and Onhowshalle, Suff."

Granted at Greenwich, by privy seal.

Robert Drury was granted, in 1510, licence to crenellate his manors of Hanstead Hall, Buknahams and Onhowshalle, Suff. Emery calls this Hanstead and puts this in Buckinghamshire (presumably a misinterpretation of Buknahams), but this is Hawstead Hall Suffolk.

Original source is

• Letters and Papers, Foreign and Domestic, of the Reign of Henry VIII Vol1 p143 No947

(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;

• Emery, Anthony, 2006, Greater Medieval Houses Vol3 (Cambridge) p212
  

More details about licences to crenellate can be found here.

Please let me know if you see any errors, can add information or can otherwise help to improve this resource. Contact me