Sima Jūn (), an eighth-generation descendant of Sima Ang, and the great-great-grandfather of Sima Yi, served as a general of the Han Empire; holding the position of General Who Conquers the West (). Sima Jūn's son, Sima Liang (), held the position of Grand Administrator of Yuzhang, and Sima Liang's son, Sima Jùn (), served as Grand Administrator of Yingchuan. Sima Jùn's son, Sima Fang, served as the Prefect of Luoyang (), Intendant of Jingzhao, and later in his life as Cavalry Commandant () towards the end of the Eastern Han dynasty. Sima Yi (Zhongda) was Sima Fang's second son.