Where does “Marvin” come from?

Marvin is an English name derived from Welsh Merfyn, which comes from Welsh mer, of unknown ultimate origin and meaning.

Ancestry of “Marvin”, step by step

Step	Language	Word	Meaning
1	Welsh	Merfyn	Mervyn
2	Welsh	mer	Nasal mutation of ber
3	Proto-Celtic	smérus	marrow
4	Proto-Indo-European	smérus	grease
5	Proto-Indo-European	smer-	to fall into thought, remember, care for; to fall...

Marvin — Etymology, Origin & Word History | Etymology Explorer