The Gatehouse website record of a licence to crenellate for Weycroft Hall, Axminster granted on 1427 May 20

Charter to Humphrey duke of Gloucester, Thomas earl of Salisbury William, earl of Suffolk, Hugh Loterell, Giles Daubeneye, Thomas Beauchamp, Walter Sandes and Thomas Brook, knights, Richard Hankford, Ralph Bussh, John Corbrygg, clerk, and John Trobell, to enclose, crenellate, turret and embattle their manor of Wycroft in Axminstre to empark 800 acres of land and wood in Axminstre and to have free warren there, provided the land be not within the metes of the forest. Witnesses: H. archbishop of Canterbury, J. archbishop of York and chancellor, W. bishop of London, P. bishop of Ely, W, bishop of Norwic and keeper of the privy seal, John duke of Norfolk, Humphre earl of Stafford, John earl of Huntingdon,and Henry earl of Northumberland the king's kinsmen, John de Talbot, Walter de Hungerford, treasurer of England, Ralph de Cromwell and John de Tiptoft, steward the household, knights. {Charter Roll, 1-20 Henry VI, No. 52.} By p.s. Vacated because on the Charter Roll of this year. (CPR)

Grant, of special grace, by the advice and consent of the king's council, to Humphrey, duke of Gloucester, the king's uncle, Thomas, earl of Salisbury William, earl of Suffolk, Hugh Luterel, knight, Giles Daubeneye, knight, Thomas Beauchamp knight, Walter Sandes, knight, Thomas Brook, knight, Richard Hankford, Ralph Bussh, John Corbrygg, clerks, and John Trebell of licence to enclose their manor of Wygoft in Axmistre with stones and mortar, and to crenellate the same; also to impark 800 acres of land and wood in Axmistre and to have free warren therein; and to hold the said manor so enclosed and the said park and warren to them and their heirs. (CChR)

Humfridus, Dux Glouc. et alii (kernellare, turrellare et batellare) ... manerium ... Wycroft in Axminstre. (Turner and Parker)

Granted at Westminster. Grant by privy seal.

Comments

Parker footnotes that "this entry was afterwards made void, because it was entered otherwise on a Charter Roll of the year." This licence was granted after William Bonville of Shute had broken into Thomas Brooke's house at Weycroft, assaulting servants and causing damage, earlier in 1427, Emery suggests the attack by Bonville was because of Brooke's Lollard sympathies. Brooke had gained the support of the Duke of Gloucester and others.

Original source is;

Lyte, H.C. Maxwell (ed), 1901, Calendar of Patent Rolls (1422-29) p. 400 online copy
Lyte, H.C. Maxwell (ed), 1927, Calendar of Charter Rolls Vol. 6 p. 1

(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. Licentia is best translated as 'freedom to' not 'permission'.)

Significant later sources are;

Emery, Anthony, 2006, Greater Medieval Houses Vol. 3 (Cambridge) p. 578, 695
Higham, R. A., 1988, 'Devon Castles: an annotated list' Proceedings of the Devon Archaeological Society Vol. 46 p. 146
Turner, T.H. and Parker, J.H., 1859, Some account of Domestic Architecture in England (Oxford) Vol. 3 part 2 p. 421 online copy

Humphrey (Humfrey or Humphrey of Lancaster), duke of Gloucester (called Good Duke Humphrey) (1390–1447), prince, soldier, and literary patron, was the youngest son of Henry, earl of Derby, later Henry IV, and his first wife, Mary de Bohun (d. 1394). He was protector of England during Henry VI's minority and the first English patron of Italian humanism.

Montagu, Thomas (Thomas de Montacute), fourth earl of Salisbury (1388–1428), soldier.

William de la Pole, 1st Duke of Suffolk (1396-1450) an important English soldier and commander in the Hundred Years' War, and later Lord Chamberlain of England.
Hugh Loterell (Hugh Luttrell), 1st Lord of Dunster Castle (c 1364-1428)

Giles Daubeneye (Giles Daubeney) (c. 1395-1445) 4th Baron Daubeney.

Thomas Beauchamp - not the Earl of Warwick but, presumably, a close relative.

Walter Sandes (Walter Sandys)

Thomas Brook (d. 1439) Knight of the Shire of Dorset 1413-4, and for the county of Somerset 1420-1, 1422-3, 1426-7. His father had received a licence to crenellate Holditch in 1397 (qv).

Richard Hankford (1397-1430) - His wife was Anne, sister of Thomas Montagu. She later married Lewes Johan. He appears in sources as a knight.

Ralph Bussh. (Bush; Busche) (d. 1441) Recorded as esquire in a Sussex fine of 7 Henry V and also again in 6 Henry VI where he is associated with Thomas Beauchamp. Ralph's wife Eleanor, who was the widow of John Chideock, is also mentioned in both these records.

John Corbrygg (Corbrig; Corbridge) "a 'John Corbrig, chaplain' was indicted for preaching heresy in Derby in 1413 and was sought to stand correction by his ordinary in 1418 and still in 1428." (Knightly, Early Lollards p. 40) - If the same person the presumably he had taken a position in a household sympathetic to Lollard views.

John Trebell (Trobell) A John Trebell, knight is recorded as in the retinue of Sir Thomas West at Agincourt. Is this him or his son? Trebell is a Cornish, or possibly, Breton, family name.

Biographical source include;

G. L. Harriss, 2004, ‘Humphrey , duke of Gloucester (1390–1447)’ Oxford Dictionary of National Biography (Oxford University Press) online copy (subscription may be needed), accessed 6 Feb 2008)
Anne Curry, ‘Montagu, Thomas , fourth earl of Salisbury (1388–1428)’ Oxford Dictionary of National Biography (Oxford University Press) Sept 2004; online edn, Jan 2008 online copy (subscription may be needed)
Wikipedia entry