This Fitz-Walter was styled 'Marshal of the Army of God and Holy Church.' He was one of the twenty-five barons appointed to enforce the observance of Magna Charta obtained from King John. An 'agreement [dated 15-25 June 1215] between King John, of the one part, and Robert Fitz-Walter, Marshal of the Army of God and of Holy Church in England, six earls and six barons named, and other earls, barons and freemen, of the other part,' is preserved in the Public Record Office, and the following description of the document is given in the _Catalogue of MSS., &c., in the Museum of the P.R.O._ (1902): 'The earls, barons and others shall hold the City of London, saving the royal revenues, and the Archbishop of Canterbury shall hold the Tower of London, saving the liberties of the city, until the Feast of the Assumption in the seventeenth year of the reign. In the meanwhile, oaths shall be taken throughout England to twenty-five barons, as is contained in the charter for the liberties and security of the realm, and all things shall be done according to the said charter; otherwise the city and the Tower shall be held as above, until all the said things shall be done.' It is said in a note to this document that 'none of the thirteen persons who are thus entered into an agreement with the King are mentioned among those upon whose advice he granted the great charter.' The third baron was himself in trade, and he owned wine ships. He received special privileges from John, and the story of that King's treatment of his daughter Matilda is supposed to be an unfounded tale. In the year 1215 the insurgent barons entered the city at Aldgate, largely owing to the assistance of Robert Fitz-Walter, whose position was of a commanding character. He died in 1235. Walter Fitz-Walter succeeded his father Robert, and died in 1257. He was succeeded by his son Robert Fitz-Walter, the fifth baron. It is of the latter's duties and privileges that we possess an account, written by Robert Glover, Somerset Herald in the reign of Elizabeth, extracts from which are given by Dugdale in his _Baronage of England_, 1675, i. 200:-- 'In time of war [he] should serve the city in manner following, viz.: To ride upon a light horse, with twenty men-at-arms on horseback, their horses covered with cloth or harness, unto the great dore of St. Paul's Church, with the banner of his arms carried before him; and being come in that manner thither, the Mayor of London, together with the sheriffs and aldermen, to issue armed out of the church unto the same dore on foot, with a banner in his hand, having the figure of St. Paul depicted with gold thereon, but the feet, hands and head of silver, holding a silver sword in his hand.