Mark Twain 
Is Shakespeare Dead? From my autobiography. 

pub One.info thank you for your continued support and wish to present you this new edition. Scattered here and there through the stacks of unpublished manuscript which constitute this formidable Autobiography and Diary of mine, certain chapters will in some distant future be found which deal with Claimants – claimants historically notorious: Satan, Claimant; the Golden Calf, Claimant; the Veiled Prophet of Khorassan, Claimant; Louis XVII., Claimant; William Shakespeare, Claimant; Arthur Orton, Claimant; Mary Baker G. Eddy, Claimant – and the rest of them. Eminent Claimants, successful Claimants, defeated Claimants, royal Claimants, pleb Claimants, showy Claimants, shabby Claimants, revered Claimants, despised Claimants, twinkle starlike here and there and yonder through the mists of history and legend and tradition – and oh, all the darling tribe are clothed in mystery and romance, and we read about them with deep interest and discuss them with loving sympathy or with rancorous resentment, according to which side we hitch ourselves to. It has always been so with the human race. There was never a Claimant that couldn’t get a hearing, nor one that couldn’t accumulate a rapturous following, no matter how flimsy and apparently unauthentic his claim might be