Yes, William Pinkney Whittington died during the Civil War on 10 Oct. 1862 in Charleston, TN. Penny applied for a Civil War widow's pension, and all the details of William's death are included in her pension application. I'd be happy to send you a transcript of the application. Please email me directly at firstname.lastname@example.org if you're interested.
How does your line come down from Napoleon Bonaparte Whittington?