Where does “Meurth” come from?

Meurth (Cornish) comes from Latin Mars, from Latin Mavors, from Proto-Italic Māwortis.

Ancestry of “Meurth”, step by step

Step	Language	Word	Meaning
1	Latin	Mars	war, battle, conflict
2	Latin	Mavors	—
3	Proto-Italic	Māwortis	—

Meurth — Etymology, Origin & Word History | Etymology Explorer