The interior contains some interesting sepulchral monuments, among which is one of Roubiliac in the reliefs to the memory of Viscount Bolingbroke and his second wife, niece of Madame de Maintenon, both lie in the family vault in St. Mary's Church. The epitaphs on himself and his wife were both written by Bolingbroke. That upon himself is still extant in his own handwriting in the British Museum, and is as follows:--"Here lies Henry St. John, in the reign of Queen Anne, Secretary of War, Secretary of State and Viscount Bolingbroke; in the days of King George I. and King George II. something more and better. His attachment to Queen Anne exposed him to a long and severe persecution; he bore it with firmness of mind, he passed the latter part of his life at home, the enemy of no national party, the friend of no faction, distinguished under the cloud of proscription, which had not been entirely taken off by zeal to maintain the liberty and to restore the ancient prosperity of Great Britain." Another monument commemorates the descent and preferments of Oliver St. John, Viscount Grandison, who was the first of the family that settled at Battersea. When studying the law at one of the Inn Courts, he killed in a duel the Captain of the Guard to Queen Elizabeth and Champion of England. "In 1648, Sir John St. John was buried at Battersea with such unusual pomp that the heralds were fluttered and commenced a prosecution against the Executor for acting contrary to the usage of arms and the laws of heraldry. William Riley, one of the heralds deposed 'that the funeral of the deceased was conducted in a manner so much above his degree that the escutcheons were more than were used at the funeral of a Duke; and that he never saw so many persons but at the funeral of one of the blood royal.' This burial is omitted in the register." In the south gallery is a monument to Sir Edward Wynter, an officer in the service of the East India Company in the reign of Charles 2nd, on which is recorded an account of his having singly and unarmed killed a tiger, and on foot defeated forty Moors on horseback. He appears to have been a friendless youth but obtained his promotion by virtue of his intelligence, courage and good conduct as the epitaph states:--