"Admiral Count Aral Vorkosigan. The colossus of Barrayaran history in this half-century. Conqueror of Komarr, hero of the ghastly retreat from Escobar. For sixteen years Lord Regent of Barrayar during Emperor Gregor’s troubled minority; the Emperor’s trusted Prime Minister in the four years since. Destroyer of Vordarian’s Pretendership, engineer of the peculiar victory of the third Cetagandan war, unshaken tiger-rider of Barrayar’s murderous internecine politics for the past two decades."
―Miles thinks about how to describe his father[src]
The Aral Vorkosigan Regency was a period of time during the reign of Emperor Gregor Vorbarra. It began when Gregor was four years old upon the death of Emperor Ezar and ended when Gregor turned 20.