Dave's Thomas Mitchell By 56hp Jun 16, 1792 Birth Guess. Period: Jul 16, 1792 to Sep 5, 1855 Thomas Mitchell DAVE Guess, I dare you. Jun 24, 1811 Joins The Military Dec 1, 1819 Called Home Apr 1, 1831 Claim made by Convict GUESS Nov 24, 1831 Begins First Expedition Feb 8, 1832 Finishes First Expedition Dec 1, 1835 Begins Second Expedition Sep 5, 1855 Death Guess.