Theobald's claim of a Shakespearean foundation for his "Double Falshood" met with suspicion, and even accusations of forgery, from contemporaries such as Alexander Pope, and from subsequent generations of critics as well. Nonetheless Theobald is regarded by critics as a far more serious scholar than Pope, and as a man who "more or less invented modern textual criticism". The evidence of Shakespeare's connection with a dramatization of the Cardenio story comes from the entry in the Stationers' Register, but Theobald could not have known of this evidence, "since it was not found until long after his death". There appears to be agreement among scholars that the 18th century "Double Falsehood" is not a forgery, but is based on the lost "Cardenio" of 1612–13, and that the original authors of "Cardenio" were John Fletcher and possibly William Shakespeare.