There is likewise a record of a Pvt William Talbot, age 22 or 24, that belonged to the same company as James C. Talbot, with the same enlistment date, that transferred to Capt. Ben Talbott's company on 11 August 1861.
Finally, I also found a newspaper reference, apparently in error, that indicated that a Lt. ___ Talbot, son of Benjamin, was killed in action at Potosi on 10 August 1861, while serving in his father's company.