The Marian Hegemony is a recent addition to the Periphery. Centered on the trade world of Alphard, the Hegemony consists of the remains of the Alphard Trading Corporation (ATC). In 2920, Johann Sebastian O'Reilly arrived on the desolate and uninhabited planet Alphard. Though the world seemed like a wasteland, he chanced upon a hidden storehouse of germanium worth at least 50,000,000,000 C-Bills. With this newfound wealth, O'Reilly hired 'Mech units and established a colony on Alphard. Johann formed his new Marian Hegemony along the disciplined lines of the ancient Terran Roman Empire during its republican days.