The two aristocrats introduced to Plunkett and Macleane by Rochester are called Dixon and Winterburn. These are the names of two players - Lee Dixon and Nigel Winterburn - for the English football team Arsenal during the late 1980's / early 1990's and part of Arsenal's famous "back four."
James Macleane (1711-1750) was the son of Scottish parson, and became known as 'Gentleman Highwayman' in partnership with his good friend Plunkett (also a Scotsman). Plunkett really was an apothecary, although it was Macleane's wife who had died. Macleane was an inveterate dandy, and this caused to make the fatal mistake of wearing a set of stolen waistcoats into the shop of the tailor who made them, leading to his arrest and subsequent hanging in November 1750.