Supposed to be a very brotherly set of people; ‘as great as two inkle weavers’ being a proverbial saying.
Definition taken from The 1811 Dictionary of the Vulgar Tongue, originally by Francis Grose.
Inexpressibles * InlaidNathan Bailey's 1736 Dictionary of canting and thieving slang
John S. Farmer's collection of canting songs and slang rhymes