Miles Naismith Vorkosigan was a military officer, space mercenary, Imperial Auditor, and District Count in the service of Barrayaran Emperor Gregor Vorbarra. He was the son of Emperor Gregor's regent, Admiral Aral Vorkosigan, and the grandson of famous Barrayaran General Piotr Vorkosigan. His mother was Cordelia Naismith Vorkosigan, a Betan Expeditionary Force Captain.