《旧唐书·列传·卷四十》
唐高祖以豆卢宽的曾祖父豆卢苌魏在太和年中例称单姓，从此改为卢氏。
高祖以宽曾祖苌魏太和中例称单姓，至是改宽为卢氏。
Emperor Gaozhu granted Doulu Kuan’s great-grandfather, Doulu Changwei, the permission to use the name of his ancestors, Doulu, and the family was henceforth renamed Lu.