《旧唐书·列传·卷一百三十九》
父亲徐彻，梁朝秘书郎，娶梁元帝女儿安昌公主为妻而生文远。
父彻，梁秘书郎，尚元帝女安昌公主而生文远。
His father, Xu Che, was an assistant minister of the interior during the Liang dynasty, and married Princess Anchang, the daughter of Emperor Yuan of Liang, and bore Wen Yuan.