Sarapin was colonized in the High Imperial Era. During the Rim Conflicts Era the Sarapin system was granted to Zharin Vonsachin. During the general chaos during the Fifth Imperial Civil War, Zharin Vonsachin and his descendants expanded from Sarapin eventually becoming powerful enough to convince Orissa Krauth into naming the Vonsachin Dynasty Exarchs of the Rimward Marches.