Answer
Pyotr Bagration was a member of the Bagrationi dynasty, a Georgian royal family that ruled over various Georgian kingdoms and principalities for over 800 years. The Bagrationi dynasty was founded in the 4th century AD by Bagrat I, a king of Iberia. The dynasty ruled over the Kingdom of Georgia from the 9th to the 14th centuries, and over the Kingdom of Imereti from the 15th to the 19th centuries.