William B. Watson was living in Volusia County in 1860. He enlisted in the 2nd FL and became a Sergeant. He was severely wounded at Seven Pines. He didn't apparently lose any limbs and would live to 1910, but was probably rendered unfit for normal service for the rest of the war. He was subsequently transferred to Munnerlyn's 1st Florida Special Cavalry Battalion, the Cow Cavalry. He was captured at home in Enterprise by a Union river raid and was a POW at Fort Delaware.
I became aware of him because of his postwar activity. He married Hattie Brock of Enterprise, FL. Her father, Jacob Brock, ran the Brock House hotel there, and before and after the war operated the Brock Line of St. John's River steamers. Born in CT, Jacob was a staunch Confederate. He was captured and imprisoned for aiding the Confederate evacuation of Fernandina with one of his steamers.
Watson went on to be a major player in the postwar steamboat business on the St. Johns and later the Indian River too. He wasn't a boat captain or owner, but was a manager and agent for several of the states largest steamboat lines for decades.