《资治通鉴·宋纪·宋纪五》
庚寅，北魏国主拓跋焘任命杨保宗为都督陇西诸军事、征西大将军、开府仪同三司、秦州牧、武都王，镇守上。并把皇室公主嫁给他为妻。又任命杨保显为镇西将军，封晋寿公。
庚寅，魏主以保宗为都督陇西诸军事、征西大将军、开府仪同三司、秦州牧、武都王，镇上邽，妻以公主；保显为镇西将军、晋寿公。
Geng Yin, the emperor of Beiwu Tuoba Tao appointed Yang Baizong as governor of Longxi Military and Political Affairs, general of the Western Expedition, general of Kaifu Yitong Sansi, governor of Qinzhou, and King of Wudao. Get married for him. Yang Baoxian was appointed General of the Western Expedition and named Duke of Jin Shou.