Another seven years passed, and in 1777 there appeared an ambitious work of reference, entitled _Biographia Literaria, or a Biographical History of Literature_, which gave its author, John Berkenhout, a free-thinking physician, his chief claim to remembrance. Steevens was a friend of Berkenhout, and helped him in the preparation of the book. Into his account of Shakespeare, the credulous physician introduced quite honestly the fourteen-year-old forgery. The reputed date of 1600, which the supposititious justice of the peace had given it in the _Theatrical Review_, was now suppressed. Berkenhout confined his comment to the halting reminiscence: "Whence I copied this letter I do not recollect; but I remember that at the time of transcribing it, I had no doubt of its authenticity." Thrice had the trick been worked effectively in conspicuous places before Steevens died in 1800. But the evil that he did lived after him, and within a year of his death the imposture renewed its youth. A correspondent, who concealed his identity under the signature of "Grenovicus" (_i.e._, of Greenwich), sent Peel's letter in 1801 to the _Gentleman's Magazine_, a massive repertory of useful knowledge. There it was duly reprinted in the number for June. "Grenovicus" had the assurance to claim the letter as his own discovery. "To my knowledge," he wrote, "it has never yet appeared in print." He refrained from indicating how he had gained access to it, but congratulated himself and the readers of the _Gentleman's Magazine_ on the valiant feast that he provided for them. His action was apparently taken by the readers of the _Gentleman's Magazine_ at his own valuation. Meanwhile the discerning critic was not altogether passive. Isaac D'Israeli denounced the fraud in his _Curiosities of Literature_; but he and others did their protesting gently. The fraud looked to the expert too shamefaced to merit a vigorous onslaught. He imagined the spurious epistle must die of its own inanity. In this he miscalculated the credulity of the general reader. "Grenovicus" of the _Gentleman's Magazine_ had numerous disciples.