John Deighton (November 1830 – May 29, 1875), generally known as Gassy Jack, was a Canadian bar owner who was born in Hull, England. The Gastown neighbourhood of Vancouver, British Columbia is named for him.
John started out as a Steamship operator for many years of his early life. However he was eventually forced to pursue other lines of work once he developed health problems (swelling of the legs and feet).
Between 1862 and 1867 John Deighton ran a bar in New Westminster, British Columbia. It was quite prosperous due to the Cariboo Gold Rush of 1862, however by 1867 business slowed down and he had to close it down.