Working up the family tree of Henry Garrison it appears he was from Tennessee and settled in Jefferson Twp Cedar Co, Missouri between 1852 and 1857. Interestingly he had 2 neighbors that popped up in the family tree, William B Hamlett of Tennessee who served with the 15th Mo Cav Volunteers Co M, 26th EMM Co B, and 7th PEMM Co M as corporal. Hamlett served under Capt J Simmons of Stockton MO in the 26th EMM enrolling at Boliver MO in 1862. I'm sure both Simmons and Hamlett knew the Garrison clan.

FWIW

John R