The Duchy of Mecklenburg-Schwerin was a duchy in northern Germany created in 1701, when Frederick William and Adolphus Frederick II divided the Duchy of Mecklenburg between Schwerin and Strelitz. Ruled by the successors of the Nikloting House of Mecklenburg, Mecklenburg-Schwerin remained a state of the Holy Roman Empire along the Baltic Sea littoral between Holstein-Glückstadt and Duchy of Pomerania.