Late in 1794 his son, William Henry, claimed to have discovered a mortgage deed signed by Shakespeare, in an old trunk belonging to a mysterious acquaintance of his, whom he designated only as Mr. H. In fact he had forged the deed himself, using blank parchment cut from an ancient deed at his employer's office. Prominent authorities pronounced it genuine, and soon other items followed – a letter from Queen Elizabeth, a love-poem by Shakespeare written to his future wife, "Anna Hatherreway", the original manuscript of King Lear, and the manuscript of an otherwise unknown play,
Vortigern and Rowena. These were soon on display at Ireland's house, where notable literary men such as
James Boswell,
Samuel Parr,
Joseph Warton, and
Henry James Pye, the poet laureate, pronounced them genuine. The chief Shakespearean scholars of the day,
Edmond Malone and
George Steevens, however, unhesitatingly denounced them as forgeries. (One curious exception was
George Chalmers, who made genuine contributions to Shakespeare scholarship, but who was nonetheless taken in by the imposition.) Samuel Ireland, however, had no doubts about their genuineness, and published them in a folio volume in December 1795. Exposure quickly followed.
James Boaden, formerly a believer, responded with "A Letter to George Steevens", published in January 1796, that attacked their authenticity, but the decisive blow was delivered by Edmond Malone's response,
An Enquiry into the Authenticity of Certain Papers and Legal Instruments, published in March 1796. The failure of
Vortigern and Rowena on its first performance quickly followed on 2 April 1796. ==Final years==