Where does “Zaankanter” come from?

Zaankanter (Dutch) comes from Dutch Zaankant, from Dutch zaan, from Middle Dutch saen, from Old Dutch sān, from Proto-West Germanic sān(ō), from Proto-Germanic sēna, from Proto-Germanic *sa, from Proto-Austronesian *əsa.

Zaankanter (Dutch): A person from the region adjacent to the river Zaan