A random thought I had today: What if George IV of Great Britain had had a male heir?
George IV was a bit of a fop, as a Prince of Wales and as a King, he was estranged from his wife after the birth of his daughter Charlotte in 1796, and following her death, his brothers started marrying, looking to produce heirs to ensure the stability of the royal dynasty. What I am wondering is, what might have happened had Charlotte had a twin brother, most likely named George? What impact would this boy have on things? Would his uncles William and Edward feel the need to get married? Would Britain maintain Hannover for longer? Who might he marry?