What is the greek language equivalent of the name Glenn?

The Greek language equivalent of the name Glenn is "Γκλεν" (pronounced similarly). However, a more traditional Greek name with a similar meaning is "Κλεάνθης" (Kleanthis), which means "glorious" or "bright." The name Glenn itself is derived from Gaelic, meaning "valley," and may not have a direct Greek counterpart beyond phonetic transliteration.