Green’s Dictionary of Slang

olli compolli n.

[? Sp. olla, a jar, and thus a dish containing a great variety of ingredients, a hotchpotch; thus, suggests DSUE, ‘the Jack-of-all-trades’; the term is cited in Dekker’s O per se O (1612) as a nickname, indicating that he is the chief of a given order of rogues, rather than a designation as such]

(UK Und.) ‘the name of one of the principal rogues of the canting crew’ (Grose, 1785).

[UK]B.E. Dict. Canting Crew n.p.: Olli-Compolli c. the by-name of one of the principal Rogues of the Canting Crew.
[UK]New Canting Dict. [as cit. c.1698].
[UK]Grose Classical Dict. of the Vulgar Tongue.
[UK]Lex. Balatronicum.
[UK]Egan Grose’s Classical Dict. of the Vulgar Tongue.
[UK]G. Kent Modern Flash Dict. 24: Oli compolli – a rogue of the canting crew.
[UK]Flash Dict. in Sinks of London Laid Open [as cit. 1835].
[US]Matsell Vocabulum 61: olli compolli The chief rogue; a very smart thief.