《明史·列传·卷四十七》
原杰又审度地势，因襄阳府所辖的郧县，在竹、房、上津、商、洛五县之中，道路四达，离襄阳有五百余里，山林阻隔，将领官吏鲜到其地，一旦有盗贼发生，府难以遥制，于是拓广该城，设置郧阳府，以郧县附属于它。
民大悦。因相地势，以襄阳所辖郧县，居竹、房、上津、商、洛诸县中，道路四达，去襄阳五百余里。山林阻深，将吏鲜至，猝有盗贼，府难遥制。乃拓其城，置郧阳府，以县附之。
Yuan Jie also considered the terrain. Because Yun County, under the jurisdiction of Xiangyang Prefecture, was in the middle of the five counties of Zhu, Fang, Shangjin, Shang, and Luo, it had a good road network and was 500 miles away from Xiangyang. The mountains and forests were isolated, and few generals and officials came to the area. If bandits were to appear, the prefecture would have difficulty controlling it. So he expanded the city, established Yunyang Prefecture, and attached Yun County to its jurisdiction.