Thanks for all your replies. I did a search on the net for Edwin Price & found this:
Civil War Confederate Army Officer. he was the eldest son of General Sterling Price, C.S.A. Edwin & his father were at the planters' house in downtown St. Louis when Lyon surrounded Camp Jackson on May 10, 1861 & thus evaded capture. Edwin returned to Charlton County as colonel or the 3d Regiment, Third Division, Missouri State Guard, took part in battles at Carthage, Drywood, & Lexington. When the division's commander, John B. Clark, was elected to the Confederate Congress, Price was promoted to brigadier general to replace him. Price was captured by Union forces in 1862. With the active involvement of President Jefferson Davis, Price was exchanged for a Union general. He rejoined his father, then in Mississippi, but promptly resigned his Confederate commission & returned to Missouri, later obtaining a pardon from President Lincoln. Price publicly renounced the Confederacy with such conviction that the Missouri Republican predicted his father would soon follow his example. Father & son reconciled at war's end, with the elder Price passing his land holdings to Edwin to avoid confiscation by the Federal authorities.