The strange disease which came to be known all over Europe as _sudor Anglicus_, or the English Sweat, was a new type or species of infection first seen in the autumn of 1485. Polydore Virgil, an Italian scholar and man of affairs, who arrived in England in 1501, became, in effect, the court historian of Henry VII.’s reign, and of the events which led up to the overthrow of Richard III. at Bosworth Field on the 22nd of August 1485; his account of the movements of Henry Tudor, from his landing at Milford Haven on Saturday the 6th of August until his triumphal entry into London on Saturday the 27th of the same month, is so minute that he must be assumed to have had access to journals written at the time. Polydore’s account of the sweat begins with the statement that it showed itself on the first descent of Henry upon the island--_sub primum descensum in insulam_[480]. The last continuator of the ancient chronicle of Croyland abbey, who was still making his entries when Bosworth Field was fought, not far from Croyland, and who closed his annals the year after, records an incident which seems to show that the sweat had been prevalent before the battle. Thomas, lord Stanley, lay at Atherstone, not far from Bosworth, with five thousand men nominally in the service of Richard, and was summoned by the king to bring up his force before the battle. He excused himself, says the Croyland annalist, on the ground that he was suffering from the sweating sickness[481]. I shall examine that evidence, and the general statement of Polydore Virgil, in a later part of this chapter. Meanwhile we may take it that the outbreak of the sweat was somehow associated in popular rumour with the victorious expedition of Henry Tudor. Writers on the English sweat hitherto have had to depend on the somewhat meagre and not always consistent statements of annalists for their knowledge of its first authentic occurrence. I am now able to adduce the testimony of a manuscript treatise on the new epidemic, written by a physician while it was still prevalent in London, and elaborately dedicated to Henry VII., if not composed by his order[482]. The author is Thomas Forrestier, styled in the title a Doctor of Medicine and a native of Normandy, tarrying in London. Whatever his relation with the Tudor court may have been, his name does not occur in the patents as one of the king’s physicians. It appears, indeed, that he had got into trouble in London some two years after this date; for, on the 28th of January, 1488, the king granted to him a general pardon, “with pardon for all escapes and evasions out of the Tower of London or elsewhere, and remissions of forfeiture of all lands and goods[483].” Probably he went back after this to his native Normandy: at all events, he is next heard of in practice at Rouen, where he published, in 1490, a Latin treatise on the plague, one of the first productions of the printing-press of that city.