I was born in Savannah, Georgia and later moved to St. Louis where I earned my living as an architect. I fought in all the battles preceding the siege of Vicksburg and was commended for my ability and gallant conduct. As a result, I was promoted to Major General. However, my health failed when I contracted dysentery during the siege and I died shortly after the surrender of Vicksburg near Raymond, Mississippi. Twenty-four years after my death, my remain were brought to Vicksburg and reinterred in the Confederate Cemetery. Who am l?