《魏书·列传·卷二十九》
不久，元颢失败，皇帝回到洛阳，进升源子恭为征南将军、兼右仆射，假车骑将军，后加授散骑常侍。
未几，颢败，车驾还洛，进征南将军、兼右仆射，假车骑将军，后加散骑常侍。
Soon Yuan Hao failed, the emperor returned to Luoyang, promoted Yuan Zigong as General of Conquering the South, concurrently Senior Right Minister, temporarily General of the Chariots and Cavalry, and later granted him the title of Gentleman of the Scattered Cavalry.