To add to what Mr. Simmons has posted, another source of information would be his widow's and minor child's pension application files. Have you obtained these from the National Archives? If not, here is the information you need to order the files:

His widow applied for a pension October 29, 1862: Application No. 5,148, Certificate No. 14,358; a minor child also applied for a pension: Application No. 115,211, Certificate No. 77,0028.