Duchy of Brunswick-Lüneburg
George was born on 28 May 1660 in the city of Hanover in the Duchy of Brunswick-Lüneburg in the Holy Roman Empire. He was the eldest son of Ernest Augustus, Duke of Brunswick-Lüneburg, and his wife, Sophia of the Palatinate. Sophia was the granddaughter of King James I of England through her mother, Elizabeth Stuart, Queen of Bohemia.