Where does “-ês” come from?
-ês (Portuguese) comes from Old Portuguese -és, from Latin -ensis, from Latin arvum, from Latin colō, from Latin quelō, from Proto-Italic kʷelō, from Proto-Indo-European kʷéleti, from Proto-Indo-European kʷel- — to turn.
-ês (Portuguese): -ese
Ancestry of “-ês”, step by step