Search - The Princess of Celle (Georgian Saga, Bk 1)

Princess Sophia Dorothea lives a sheltered life with her parents in Celle. Her father is manipulated into making her marry George, the heir to Hanover. There, she lives a sad life as the wife of George. His mistresses are flaunted in front of her, and he treats her badly. She does bear him two children, another George and another Sophia Dorothea.
She falls in love with a handsome count from Sweden and they have an affair. They are caught, however, and he is murdered and she is banished. She lives the rest of her life in exile. When her husband is proclaimed King of England, she is refused the title of Queen. She eventually dies, alone, about the same time as her husband