The oldest records that give a name for theIsle of Wightare from the Roman Empire. It was called Vectis or Vecta in Latin and Iktis or Ouiktis in Greek. Latin Vecta, Old English Wiht, and Old Welsh Gueid and Guith were recorded from the Anglo-Saxon period. The Domesday Book called the island Wit. The modern Welsh name is Ynys Wyth (ynys meaning island). These are all variants of the same name, possibly Celtic in origin.

https://en.wikipedia.org/wiki/Isle_of_Wight