She was the sister of George II of Great Britain and the mother of inter alia
Frederick II of Prussia.
Sophia Dorothea of Hanover
Source picture: Wikipedia
Her parents were George Louis of Hanover (the later George I of England)
and Sophia Dorothea of Celle.
In 1706 she married Crown Prince Frederick William of Prussia. They had
seen each other when they were kids. Since then, they disliked each other.
In 1713 she became Queen consort of Prussia.
Sophie Dorothea died on June 28th. 1757.