《旧唐书·本纪·卷十五》
四月十一日，任命刑部尚书李愿为凤翔尹，充任凤翔陇右节度使。
戊午，以刑部尚书李愿为凤翔尹，充凤翔、陇右节度使。
On April 11, Li Yuan, the Minister of the Ministry of Justice, was appointed as the Yin of Fengxiang, and served as the Jiedushi of Fengxiang Longyou.