Where does “Marcantonio” come from?

Marcantonio (Italian) comes from Italian marco, from Latin Mārcus, from Latin Martīnus, from Latin -īnus, from Proto-Italic -īnos, from Proto-Indo-European -iHnos, from Proto-Indo-European -no- — adjectival suffix.

Marcantonio (Italian): hunk handsome or strapping man

Definitions

hunk handsome or strapping man

Ancestry of “Marcantonio”, step by step

Marcantonio traces back through two separate lines of ancestry.

via Italian marco

Step	Language	Word	Meaning
1	Italian	marco	first-person singular present indicative of...
2	Latin	Mārcus	—
3	Latin	Martīnus	—
4	Latin	-īnus	of or pertaining to; -ine
5	Proto-Italic	-īnos	of/belonging to
6	Proto-Indo-European	-iHnos	Creates adjectives of materials
7	Proto-Indo-European	-no-	adjectival suffix

via Italian Antonio

Step	Language	Word	Meaning
1	Italian	Antonio	—
2	Latin	antonius	The name of a Roman gens, a "family name"
3	Ancient Greek	Ἄντων	—

Every word from Proto-Indo-European -no- →Every word from Latin -īnus →Every word from Latin Martīnus →