《周书·列传·卷二十二》
父亲周信，少年时在州郡当官，历任乐乡、平舒、平成三县县令，都以清廉能干出名。
父信，少仕州郡，历乐乡、平舒、平成三县令，皆以廉能称。
His father, Zhou Xin, served as an official in the prefecture and county in his youth. He successively held the post of magistrate of Lixiang, Pingshu, and Pingcheng counties and was famous for his integrity and competence.