Rubrick notes: There is mention in Shakespeare's works of a Toby jug

When I was a lad, we had an Englishman who lived with us for a while who had a collection of these particular dust-collectors (always with a pipe in mouth and a foaming mug of beer in hand). He told me they depicted a lush of English extraction, by the name of Toby Philpot (as in fill th' pot wif ale, I persume). I'd no idea that Toby's illustrious history extended back so far.