Where does “Borromeo” come from?

Borromeo (Italian) comes from Italian Romeo, from Latin romaeus, from Ancient Greek ῥωμαῖος, from Ancient Greek -αῖος, from Ancient Greek -ῐος, from Proto-Indo-European -yós — Creates adjectives from noun or verb stems.

Ancestry of “Borromeo”, step by step

Borromeo traces back through two separate lines of ancestry.

via Italian Romeo

StepLanguageWordMeaning
1ItalianRomeoRoman
2LatinromaeusRomaean, Byzantine
3Ancient GreekῥωμαῖοςRoman
4Ancient Greek-αῖοςSuffix added to nouns or adjectives, forming adjectives: pertaining to, belonging to ("of")
5Ancient Greek-ῐοςbelonging to; of”, “belonging to”, “pertaining to
6Proto-Indo-European-yósCreates adjectives from noun or verb stems

via Italian bono

StepLanguageWordMeaning
1ItalianbonoAlternative form of buono; good
2Latinbonumnominative neuter singular of bonus; accusative...
3Latinbonusgood, honest, brave, noble, kind, pleasant;...
4Old LatinduenosAlternative form of duonus
5Proto-Italicdwenosgood
6Proto-Indo-Europeandew-to show favour, revere; to fail, to lag, to be...

Words derived from “Borromeo

Every word from Proto-Indo-European -yósEvery word from Ancient Greek -ῐοςEvery word from Ancient Greek -αῖος