• The Deseret Weekly article about his funeral confirms that he came to Utah in 1852 in the John Tidwell Company.  Four traveling in the family. He also brought Merren Merrel.

  His death date is confirmed by his obituary.

John Tidwell Company (1852)

• Age at Departure: 25
• Head of Household

Sources

• 1860 Utah Census.
• "5th Company," Deseret News, 18 September 1852, 2.
• 5th Company of 50 report, 1852 September 14.  
• "Bishop McCullough Dead," The Daily Enquirer , 11 Apr. 1893, [1].
• "Bishop McCullough's Funeral," Deseret Weekly, 22 April 1893, 4.
• Council Point Emigrating Company journal, 1851 November-1852 September.
• Find a Grave (Website)
• George K. Bowering journal, 1842 July-1875 January, 79-118.
• Journal History of The Church of Jesus Christ of Latter-day Saints, Supplement after 31 December 1852, 28.
• Young, Anna Ross, [Autobiography], in Eleanor McAllister Hall,comp., The Book of Jared [1963], 53.