Biography Marriage and children. On 10 November 1734 in Potsdam, Sophia Dorothea married her Hohenzollern kinsman Frederick William, Margrave of Brandenburg-Schwedt, son of Philip William, Margrave of Brandenburg-Schwedt, and Princess Johanna Charlotte of Anhalt-Dessau, daughter of John George II, Prince of Anhalt-Dessau.
Sophia Dorothea of Brunswick-Lüneburg-Celle (15 September 1666 – 13 November 1726) was the repudiated wife of future King George I of Great Britain. The union with her first cousin was a marriage of state , arranged by her father George William, her father-in-law the Elector of Hanover, and her mother-in-law, Electress Sophia of Hanover , first cousin of King Charles II of England .