The Patapsco River is a 39 mi river in central Maryland, Patapsco is derived from which subgroup, of the Algonquian languages?
Patapsco River:  The name "Patapsco" is derived from the Algonquian "pota-psk-ut", which translates to "backwater" or "tide covered with froth." Eastern Algonquian languages: The Eastern Algonquian languages constitute a subgroup of the Algonquian languages.
i don't know