Ranulph Tarkin was a Human male from Eriadu who became an important political figure in the waning years of the Galactic Republic. Born into the wealthy Tarkin family, Ranulph spent his younger years further increasing the family's wealth and solidifying Eriadu's hegemony in the Seswenna sector and the broader Outer Rim Territories. He became determined that the Republic could not be secure without centralized armed forces and demanded the restoration of the Republic Military, forming his own fleet and army, the Republic Outland Regions Security Force, as a prototype for the new force. By 44 BBY, Tarkin was serving as the Senator for the Seswenna sector and was the leader of the Senate's Militarist faction, becoming the Senate's most vocal advocate for re-armament.