(2) Royal Doulton Toby Mugs. (1) Royal Doulton Dracula Toby Jug. Signed underneath. Certificate of authenticity included. Size: 8 x 5 x 7 3/4 in. (1) Royal Doulton Frankenstein Toby Mug. Signed underneath. Certificate of authenticity included. Size: 8 x 5 x 6 1/2 in. Toby Jugs first made their appearance in 18th-century England. Specifically, the Staffordshire area was a hub of pottery activity. Acclaimed potters, such as Ralph Wood I and II, were known for their quality Toby Jug creations. Speculation continues about the origin of the Toby Jug name. One potential source is Sir Toby Belch, a memorable character from Shakespeare’s “Twelfth Night.” Or, perhaps the name sprang from a popular song of the era, “Brown Jug.” Brown Jug’s tune features a character named ‘Toby Fillpot (or Philpot)’.