However, there are a few options depending on what you're looking for:
* The closest phonetic spelling: This would be "Huw". This is a common Welsh name and is pronounced almost identically to "Hugh".
* A more literal translation: You could use "Hywel" which means "noble". This is a traditional Welsh name that shares a similar meaning to Hugh.
Ultimately, the best spelling depends on your specific need. If you are looking for a name for a Welsh character, "Huw" would be the most appropriate. If you are simply trying to translate "Hugh" into Welsh, "Hywel" might be a better option.