How do you spell melvin in Gaelic?

There isn't a direct Gaelic equivalent of the name Melvin. Gaelic names are often descriptive or have meanings tied to the language and culture. To find a Gaelic name that *sounds* or *feels* similar to Melvin, you'd need to consider the meaning of Melvin (which is usually of British origin, meaning "friend" or "chief") and find a Gaelic name with a similar meaning or sound. There's no single "correct" translation.