John Mowbray, 3rd Duke of Norfolk further been suggested that his comic catchphrase was deliberately intended to invoke Sir John Falstaff, one of Shakespeare's best known characters, for the audience. In Shakespeare's "Henry IV, Part 2", Justice Shallow refers to Falstaff as having once been a page to "Thomas Mowbray, Duke of Norfolk", Mowbray's grandfather. Falstaff is commonly considered to be a fictional representation of either Sir John Oldcastle or Sir John Fastolf—or possibly an amalgamation of the two—both of whom are variously associated with Mowbray. John Mowbray, 3rd Duke of Norfolk John Mowbray, 3rd Duke of Norfolk, KG, Earl Marshal (12 September 1415 – 6
John Oldcastle at last consented to a prosecution. Oldcastle refused to obey the archbishop's repeated citations, and it was only under a Royal Writ that he at last appeared before the ecclesiastical court on 23 September 1413. In a confession of his faith he declared his belief in the sacraments and the necessity of penance and true confession, but he would not assent to the orthodox doctrine of the sacrament as stated by the Bishops, nor admit the necessity of confession to a priest. He also said the veneration of images was "the great sin of idolatry". On 25 September he was