Persons said to have been formerly hired to tell wonderful stories of giants and fairies, to lull their hearers to sleep. Talesman; the author of a story or report: I’ll tell you my tale, and my talesman. Tale bearers; mischief makers, incendiaries in families.
Definition taken from The 1811 Dictionary of the Vulgar Tongue, originally by Francis Grose.
See also the definition in Nathan Bailey's 1736 dictionary of canting and thieving slang.
Taken In * Tall BoyNathan Bailey's 1736 Dictionary of canting and thieving slang
John S. Farmer's collection of canting songs and slang rhymes