James Boswell died in 1795 believing he had touched and kissed a cache of Shakespeare's original letters and papers discovered by a Mr. Ireland. His friend, Edmond Malone, publicly exposed the lot as a forgery just a year later.
William WebsterBorn Dec 21, 1750
Died Jan 09, 1767 by drowning
Life with Boswell:
Boswell wrote in his journal on January 12, 1767 "[h]eard of Willy Webster's being drowned. Sorry, but felt mind hardened."