Where does “Minno” come from?

Minno (Old Portuguese) comes from Latin Minius, from Proto-Celtic mino-, from Proto-Indo-European mei- — to go; to switch; small.

Ancestry of “Minno”, step by step

Minno traces back through two separate lines of ancestry.

via Latin Minius

StepLanguageWordMeaning
1LatinMiniusA river in Gallaecia, now the Minho river
2Proto-Celticmino-smooth
3Proto-Indo-Europeanmei-to go; to switch; small

via Medieval Latin Mineo

StepLanguageWordMeaning
1Medieval LatinMineo—
Every word from Proto-Indo-European mei- →Every word from Proto-Celtic mino- →Every word from Latin Minius →