 There is no direct evidence for the origin of the modern name of Valladolid.One widely held etymological theory suggests that the modern name "Valladolid" derives from the Celtiberian language expression "Vallis Tolitum", meaning "valley of waters", referring to the confluence of rivers in the area.Another theory suggests that the name derives from the Arabic expression (), which means "city of al-Walid", referring to Al-Walid I.