Inescutcheon of the Honour and Manor of Woodstock, granted by royal warrant in 1722 as an augmentation of honour to the coat of arms of John Churchill, 1st Duke of Marlborough (1650–1722), and borne at his funeral. Cross of St George surmounted by the royal arms of France. Blazon: On an escutcheon argent the Cross of St George surmounted by another escutcheon azure charged with three fleurs-de-lis two and one or (Montague-Smith, P.W. (ed.), Debrett's Peerage, Baronetage, Knightage and Companionage,  Kelly's Directories Ltd, Kingston-upon-Thames, 1968, p.747)
"By Royal Warrant, 19th July 1722, this standard was borne at the funeral of John Churchill, Duke of Marlborough, 9th August 1722. By a further Royal Licence, 26th May 1817, this device was added as an augmentation to the arms of the Dukes of Marlborough".
(Source:The book of public arms : a complete encyclopædia of all royal, territorial, municipal, corporate, official, and impersonal arms by Fox-Davies, Arthur Charles, 1915, p.862[1]

"Parliament granted the honor (i.e. feudal barony) and manor of Woodstock to John Churchill, duke of Marlborough, in 1705. The grant was in recognition of the victory at Blenheim on 13 August 1704. The manor was to be held in feudal tenure of the Queen in free socage by service of presenting at Windsor Castle, on the anniversary of the battle, a standard bearing the fleur-de-lys of France" (Source: A P Baggs, W J Blair, Eleanor Chance, Christina Colvin, Janet Cooper, C J Day, Nesta Selwyn and S C Townley, 'Blenheim: Woodstock manor', in A History of the County of Oxford: Volume 12, Wootton Hundred (South) Including Woodstock, ed. Alan Crossley and C R Elrington (London, 1990), pp. 431-435 http://www.british-history.ac.uk/vch/oxon/vol12/pp431-435)
own work,  using fleur-de-lys element from File:Coat_of_arms_of_Raffaello_Martinelli by User:SajoR
Lobsterthermidor (talk) 13:40, 24 September 2021 (UTC)