One of the faithful; a taylor who gives long credit. His faith has made him unwhole; i.e. trusting too much, broke him.
Definition taken from The 1811 Dictionary of the Vulgar Tongue, originally by Francis Grose.
Faggot * FairNathan Bailey's 1736 Dictionary of canting and thieving slang
John S. Farmer's collection of canting songs and slang rhymes