Caroline became Queen , but George despised her and sought a divorce by accusing his wife of infidelity .
After the death of George III in 1820 , Prince George became King of the United Kingdom and Hanover , as George IV .
Caroline became Queen , but George IV despised her and sought a divorce by accusing Prince George 's wife of infidelity .
After the death of George III in 1820 , Prince George became King of the United Kingdom and Hanover , as George IV .