premise: John Deighton was forced to pursue work.
hypothesis: John Deighton . Tom and Richard apprenticed on British ships , but Jack did not receive that opportunity . Deighton signed up to work a new clipper Invincible that could sail 400 miles a day and made the trip in only 115 days . Next , Deighton worked a gold claim in California , along with many others , until February 1858 when there was news of gold further north in a British territory known as New Caledonia . By 1864 , Deighton was forced to pursue other lines of work as he developed health problems ( swelling of the legs and feet ) . Between 1862 and 1867 , he ran a bar called the Globe Saloon in New Westminster , British Columbia .