In 1818 Edward, Duke of Kent married Princess Victoria of Saxe-Coburg-Saalfield. This was one of the alliances contracted as part of the 'royal marriage race', as the ageing sons of George III were finally persuaded to do their duty and produce some heirs. The Duke of Kent ended his long and happy liaison with his mistress, taking as his bride this German widow nineteen years his junior. Their only child, Victoria, was born in 1819 and became Queen in 1837. The Duchess of Kent was a controlling mother and is said to have had a difficult relationship with her daughter.