Some writers have assigned an earlier date to this edifice, ascribing its origin to the great Roman invader of our shores, whence it has been sometimes denominated Cæsar’s Tower; and the hypothesis is supposed to be confirmed by Fitz Stephens, a monkish historian of the period of Henry the Second, who states, that “the city of London hath in the east a very great and most strong Palatine Tower, whose turrets and walls do rise from a deep foundation, the mortar thereof being tempered with the blood of beasts.” On this authority, Dr. Stukeley has introduced a fort, which he terms the Arx Palatina, in his plan of Londinium Augusta. But, though it is not improbable that some Roman military station may have stood on the spot now occupied by the White Tower,—certain coins and other antiquities having been found by the workmen in sinking the foundations of the Ordnance Office in 1777,—it is certain that no part of the present structure was erected by Julius Cæsar; nor can he, with propriety, be termed the founder of the Tower of London. As to its designation, that amounts to little, since, as has been shrewdly remarked by M. Dulaure, in his description of the Grand Châtelet at Paris—“every old building, the origin of which is buried in obscurity, is attributed to Cæsar or the devil.”
Fourteen years afterwards, in the reign of William Rufus, who, according to Henry of Huntingdon, “pilled and shaved the people with tribute, especially about the Tower of London,” the White Tower was greatly damaged by a violent storm, which, among other ravages, carried off the roof of Bow Church, and levelled above six hundred habitations with the ground. It was subsequently repaired, and an additional tower built on the south side near the river.
Strengthened by Geoffrey de Magnaville, Earl of Essex, and fourth constable of the fortress, who defended it against the usurper Stephen, but was, nevertheless, eventually compelled to surrender it; repaired in 1155, by Thomas à Becket, then Chancellor to Henry the Second; greatly extended and enlarged in 1190, the second year of the reign of Richard Cour de Lion, by William Longchamp, Bishop of Ely and Chancellor of the realm, who, encroaching to some distance upon Tower Hill, and breaking down the city wall as far as the first gate called the postern, surrounded it with high embattled walls of stone, and a broad deep ditch, thinking, as Stowe observes, “to have environed it with the river Thames;”—the Tower of London was finished by Henry the Third, who, in spite of the remonstrances of the citizens, and other supernatural warnings, if credit is to be attached to the statement of Matthew of Paris, completely fortified it.