John Tinker left San Francisco.

The evidence

• “Samuel Tinker died in 1860, at about the age of 70. John started out for himself at the age of 18 ; at the age of 22, went to sea ; sailed from New London in the ship Dover (June, 1844) for the Pacific Ocean, by way of the Cape of Good Hope, on a whaling voyage ; was gone about three years ; brought home four thousand barrels of oil ; he shipped as physician and cooper's mate ; then went to Castleton, Vt., and attended a course of lectures and graduated there ; immediately after this, went to California in schooner Olivia, a vessel of one hundred tons ; was gone three years ; landed in San Francisco in July, 1849 ; there was hardly a decent building there then ; left there in June, 1852, and returned by way of the Isthmus. Married, Nov. 6, 1852, Phebe C. Nash, daughter of Isaac Nash; have one child, Lizzie, born Aug. 6, 1866, now attending school.”

  1879-history-of-rock-county/20-bios-clinton.md, PDF p. 782 / book p. 786

  Butterfield, C. W., et al. The History of Rock County, Wisconsin: its early settlement, growth, development, resources, etc. Chicago: Western Historical Company, 1879. Cornell University Library via the Internet Archive, archive.org/details/cu31924028871585.

  Grade A: Found on a page of one of our sources