More significantly, George IV's only daughter, Princess Charlotte, is the only female to date to be Princess of Wales in her own right, and would have been Queen if she had survived her father. She died young, in childbirth, and if she had not, Queen Victoria would not only never have been Queen, she would never have been born. (After Charlotte's death all her bachelor uncles rushed into marriage to produce an heir. The future William IV abandoned the longterm mistress with whom he had 10 children in order to marry, but had no children with his wife. Victoria's father was the next youngest brother.)