Pei Commandery (沛郡) was a commandery of Yu Province in what is now northern Anhui and adjacent Jiangsu. Qiao County (譙縣) was in Pei. The Cao family—Cao Song, Cao Cao, Cao Ang and the rest—and the Xiahou family—Xiahou Dun, Xiahou Yuan, Xiahou Shang, Xiahou Mao, Xiahou Ba, Xiahou Xuan—were from Qiao in Pei Commandery. The two families were closely linked and formed the core of Cao Cao’s early support. See also Pei State, Qiao, Pei, Peiguo.
Pei Commandery 沛郡
Commandery in Yu Province; the Cao and Xiahou families were from Qiao County, Pei Commandery.