When John was young, John's father was converted to the Church of Jesus Christ of Latter-day Saints in 1841 by John Taylor. John was baptized on Dec 1, 1846, but it wasn't until 1848 that John's mother would be baptized. Soon after, the Comish family made preparations to move near the Saints. The Comish family was finally able to set sail on Jan 10, 1852 on the Kennebec and arrived in New Orleans, Louisiana on March 19.1 The Comish family lived in St. Louis until they could make the means to move to Utah.
The Comish family joined the John Hindley Company on June 7, 1855 and arrived in the Salt Lake Valley on Sep 3. In 1860, the Comish family was asked to help settle Cache Valley, and moved to Franklin.
In 1862, John was asked to help with the Henry W. Miller Company traveling across the plains. In the Company was Esther Elizabeth Stanford. Soon after the Company arrived in Utah, John and Esther were married in Salt Lake City on Nov 22, 1862. The couple moved to Logan, Utah before moving to Franklin with his brother-in-law Mark Preece.
In 1875, John and his brother Robert were asked to settle one last time in Cove.