Where does “marcel” come from?

Marcel is a French given name derived from Latin Marcellus, a diminutive of Marcus, ultimately from Proto-Italic Māwortis and Proto-Indo-European -kos.

Ancestry of “marcel”, step by step

Step	Language	Word	Meaning
1	French	Marcel	—
2	Latin	Marcellus	—
3	Latin	Mārcus	—
4	Latin	Martīnus	—
5	Latin	-īnus	—
6	Proto-Italic	-īnos	of/belonging to
7	Proto-Indo-European	-iHnos	Creates adjectives of materials
8	Proto-Indo-European	-no-	adjectival suffix

Every word from Proto-Indo-European -no- →

marcel — Etymology, Origin & Word History | Etymology Explorer