Gesta Grayorum

In Nichol's *Progresses of Queen Elizabeth*, vol. iii., p. 262., a tract is inserted, entitled "Gesta Grayorum; or, History of the High and Mighty Prince Henry, Prince of Purpoole, &c., who lived and died in A.D. 1594." The original is said to have been printed in 1688, by Mr. Henry Keepe. Is any copy of it to be had or seen?