• Evidence that he came in 1855 is confirmed in information found in emigration, Perpetual Emigrating Fund, and church financial records. His surname is spelled differently (McMonkeon, Monkcon, Monkum, Mankcome, Montkin, Monkcom, Moncum, etc.) in various sources.

Richard Ballantyne Company (1855)

• Age at Departure: 35
• Head of Household

Sources

• 1856 Utah Census.
• 1860 California Census.
• 1880 California Census.
• 1900 California Census
• 4th Company of 50 report, 1855 June.
• "Immigration List," Deseret News, 12 September 1855, 214.
• Perpetual Emigrating Fund, Financial Accounts 1849-1886, Ledger A, p. 189.
• Perpetual Emigrating Fund, Financial Accounts 1849-1886, Ledger B, p. 86.