The Oldbuck Family was an ancient family of Shire-hobbits, who went on to become one of the most well-known families of Shire.
Consisting of mainly Stoorish blood, the members of this prosperous family came from the Marish, where they traced their heritage to one Bucca of the Marish, the first Thain of the Shire. Thainship was in the Oldbuck family until T.A. 2340 (S.R. 740).