Where does “Mercuiro” come from?

Mercuiro (Old Portuguese) comes from Latin Mercurius, from Latin merx, from Proto-Italic *merks.

Ancestry of “Mercuiro”, step by step

StepLanguageWordMeaning
1LatinMercuriusMercury; a Roman god associated with speed and...
2Latinmerxmerchandise, commodity; goods, wares
3Proto-Italic*merks—
Every word from Proto-Italic *merks →Every word from Latin merx →Every word from Latin Mercurius →