Dwayne or Dewayne is a traditionally male name, a variant of Duane. It is Gaelic in origin, deriving from the Irish saint Dubhán. History. St. Dubhán was an Irish monk who established a monastery in Hook Head, Ireland , during the 5th century. As a surname, it is O'Dubhain, or Dubhan. Dubhain was a popular given name in 16th-century southern Ireland. Its Anglicized form is Dwayne or Duane. In Irish, "dubh" means "black". Variant forms. Dewayne. Dewaine. Dewane. Duaine. Duane. Duwain. Duwaine. Duwayne. Dwain. Dwaine. Dwane. Given name.
https://en.wikipedia.org/wiki/Dwayne