Question: Which son of Sophia of Hanover ruled part of the Holy Roman Empire?
Sentence (from "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.
Relevant evidence: Yes