《周书·列传·卷十九》
杨忠的弟弟杨整，建德年间任开府，封爵陈留郡公，他跟从高祖平定齐军，死在并州。
弟整，建德中，开府、陈留郡公，从高祖平齐，殁于并州。
Yang Zheng, the younger brother of Yang Zhong, served as Kaifu in Jiande Year and was granted the title of Chenliu County Duke. He followed Gaozu to pacify the Qi army and died in Bingzhou.