What does Delwyn mean?
Delwyn \d(e)-lw-yn\ as a name for boys. Delwyn's roots are Old English and Irish, and the name Delwyn means "godly friend; proud friend; bright friend". Delwyn is a form of Delvin (Old English, Irish).
Delwyn is an uncommon first name for males. Delwyn is a rare last name too for both adults and children. (2000 U.S. Census)
Delvin is the only popular alternative form of Delwyn (#unlisted) listed in the Top 1000. Adoption of these boy names was at its most widespread during the years 1970-1979 (usage of 0.119%) and has become less since. Below is a charted comparison of the usage of the boy name Delwyn and affiliated names. (2014 Birth Statistics)