Meaning and Origin of the Name Gwynfor. ... It's a Welsh name and the name Gwynfor means great and white. Gwynfor's meaning is from the Welsh element gwyn. Gwyn means light, fair, and blessed. It is combined with mawr which means great and large.
The name Gwythyr is a boy's name meaning "victory". Gwythyr and is often added to lists like Names That Mean Victory. From the experts: Gwythyr is sometimes used as the Welsh equivalent of Victor. However, his role in mythology is much more ambiguous, representing the never-ending struggle between summer and winter.
Meaning: Legendary son of greidyawl Origin: English