Vaun is of Norman origin and means 'strong'. It was introduced to England by the Normans after the conquest of William the Conqueror in 1066. The name is a diminutive form of Vaunce, which itself comes from the Germanic elements wag 'to go' and hild 'battle'. Vaun was not particularly popular in medieval times but has seen occasional usage throughout history. It is considered an unusual yet elegant choice for a first name today.
"Despite its infrequent use, the name Vaun has seen steady, if not frequent, popularity throughout the 20th and early 21st centuries, with peak years seeing over ten births."