Which son of Sophia of Hanover ruled part of the Holy Roman Empire?
George I of Great Britain George I (George Louis; German: "Georg Ludwig" ; 28 May 1660 – 11 June 1727) was King of Great Britain and Ireland from 1 August 1714 until his death, and ruler of the Duchy and Electorate of Brunswick-Lüneburg (Hanover) in the Holy Roman Empire from 1698.
Isenburg-Isenburg Isenburg-Isenburg was the name of a state of the Holy Roman Empire, based around Isenburg in modern Rhineland-Palatinate, Germany. It was created as a partition of the Niederlahngau in 1137. It partitioned into Lower Isenburg and Isenburg-Braunsberg in 1199.