• Willis's date of birth was listed as 15 June 1827 in "John Brown's company of 10, report, 1848 June."

Willard Richards Company (1848)

• Age at Departure: 21

Sources

• John Brown's company of 10, report, 1848 June in Camp of Israel schedules and reports 1845-1849.
• John Zimmerman Brown, comp., Autobiography of Pioneer John Brown, 1820-1896 (Salt Lake City, 1941), 100.
• Mississippi company, report, 1848 May in Camp of Israel schedules and reports, 1845-1849.