A Testimonie of the learned Mathematician master Iohn Dee, [Footnote: Born in London in 1537. He was educated at St. John's College, Cambridge. He was a man of vast erudition, but being, in Mary's reign, suspected of devoting himself to the "black art," a mob broke into his house and destroyed his library, museum, and mathematical instruments, said to be worth £2,000; and he himself was cast into prison. He was in great favour with Queen Elizabeth, who is said to haue paid him a salary, employed him on secret political missions, and visited him at Mortlake. He professed to be able to raise the dead, and had a magic ball (in reality a lump of black lead), in which he pretended to read the future, and which was afterwards in Horace Walpole's collection at Strawberry Hill. In 1596. he was made Warden of Manchester College, and died in 1608.] touching the foresaid voyage of Nicholas De Linna. Anno 1360. (that is to wit, in the 34. yeere of the reigne of the triumphant king Edward the third) a frier of Oxford, being a good Astronomer, went in companie with others to the most Northren Islands of the world, and there leauing his company together, hee transited alone, and purposely described all the Northerne Islands, with the indrawing seas: and the record thereof at his returne he deliuered to the king of England. [Sidenote: Inuentio Fortunata.] The name of which booke is Inuentio Fortunata (aliter fortunæ) qui liber incipit a gradu 54. vsque ad polum. Which frier for sundry purposes after that did fiue times passe from England thither, and home againe. It is to be noted, that from the hauen of Linne in Norfolke (whereof the foresaid Francisan frier tooke his name) to Island, it is not about a fortnights sailing with an ordinarie winde, and hath bene of many yeeres a very common and vsuall trade: which further appeareth by the priuileges granted to the Fisher men of the towne of Blacknie in the said Countie of Norfolke, by king Edward the third for their exemption and freedome from his ordinary seruice in respect of their trade to Island. [Sidenote: An 2. & 4. & 31. Edwardi tertij.] * * * * * The voyage of Henry Earle of Derbie, after Duke of Hereford and lastly king of England by the name of Henry the fourth, An. Dom 1340. into Prussia and Lettowe against the infidels, recorded by Thomas of Walsingham