A Toby Jug – also sometimes known as a Fillpot (or Philpot) – is a pottery jug in the form of a seated person, or the head of a recognizable person (often an English king). The original Toby Jug, with a brown salt glaze, was developed and popularized by Staffordshire potters in the 1760s.[2] It is thought to be a development of similar Delft jugs that were produced in the Netherlands.[3] Similar designs were produced by other potteries, first in Staffordshire, then around England, and eventually in other countries. There are competing theories for the origin of the name "Toby Jug". One is that it was named after the intoxicated, jovial character of Sir Toby Belch in Shakespeares play Twelfth Night. Another is that it was named after a notorious 18th-century Yorkshire drinker, Henry Elwes, who was known as "Toby Fillpot" (or Philpot), who was mentioned in an old English drinking song The Brown Jug, the popular verses of which were first published in 1761.