Rashid-al-Din Hamadani
Mongolian Sinologist Sühe Baatar suggests "Nirun" Нирун as the modern Mongolian term for the "Rouran", as Нирун superficially resembles reconstructed Chinese forms beginning with *"ń"- or *"ŋ"-. Rashid-al-Din Hamadani recorded "Niru'un" and "Dürlükin" as two divisions of the Mongols.