John Henry Bowman was a resident of Mansfield on December 23, 1864 when he enlisted as a Private in Co. B of the 29th (Colored) Regiment Connecticut Volunteer Infantry; he was paid $100 of the $200 bounty at the time of his enlistment. The muster report of March and April 1865, stated that he had been absent sick in the field hospital since February 6, 1865. He was mustered out in Brownsville, Texas on October 24, 1865.
He was born about 1836 in Canada. John Henry Bowman was not a resident of Mansfield in the 1860 U.S. census; no further information is known.