Where does “quan” come from?

quan (Old Portuguese) comes from Latin quam, from Proto-Italic kʷoi, from Proto-Indo-European kʷós — who.

Ancestry of “quan”, step by step

StepLanguageWordMeaning
1Latinquamin what way, to what degree; how, how much, as...
2Proto-Italickʷoiwho, what
3Proto-Indo-Europeankʷóswho

Words derived from “quan”

Every word from Proto-Indo-European kʷós →Every word from Proto-Italic kʷoi →Every word from Latin quam →