femmenietzsche:

Dick Carter, Chair of the Delaware Heritage Commission, states that the name of Murderkill River is taken from the original Dutch for Mother River. Mother is moeder in Middle Dutch, and river is Kille. Later, under British rule, the word “River” was added to the waterway’s name, effectively making it “mother river river.”^[9] The term “kill” is used in areas of Dutch influence in the Delaware and Hudson Valleys and other areas of the former New Netherland colony of Dutch America to describe a strait, river, or arm of the sea such as Schuylkill River in Pennsylvania.

Yeah the settlement patterns of the Delaware Valley means there’s a mixture of native, English, Dutch, and Welsh place names, it’s great for shibboleths