The House of Hanover seems to have had an interesting problem towards the end of the 18th and beginning of the 19th century. George III had seven sons, but only one of them had had any surviving children. Now when Princess Charlotte died in 1817, there was a rush to find a bride for both William IV and for Edward, Duke of Kent as well as his younger brothers Ernest, Duke of Cumberland and Adolphus, Duke of Cambridge. Kent produced Victoria the eventual queen, whilst Ernest and Adolphus both had sons as well.
My question is this, say things go as otl, until 1818. Charlotte is dead, but in 1818, the Duke of Kent and Strathearn dies June, 1818 from a very bad illness, his wife Victoria is not pregnant at this point, and so becomes a widow for the second time. Following this, George III dies in 1820, William then Duke of Clarence and St Andrews continues to struggle having surviving legitimate issue with his wife Adelaide, before his own untimely death in 1827, which is followed a few months later by his brother Frederick's death from Dropsy. This thus leaves Ernest Augustus, and his son George as the immediate heirs to the British throne. However, in 1829, mere months before George IV himself dies, Ernest, his wife and son are assassinated by rogue members of the army-allegedly working under orders from enemies of the Duke- this leaves George III's sixth son Augustus Frederick, Duke of Sussex as his brother's heir.
In 1830, George IV dies, and his brother, Augustus Frederick becomes King...or does he?
Otl, Augustus had contracted a marriage to a Catholic lady which had been dissolved in 1801, and then in 1831, he married another lady in contravention of the Royal Marriages Act. So, my question to you is this, the first marriage has already gone through and been dissolved. But, would Augustus do as his relation Edward VIII did one hundred years later and put love above duty and the crown? Or would he stick it out and become King. If he does become King, what happens to his children from his first marriage? Does he have the power to make them true heirs to the throne, or would he need to marry properly this time and sire heirs?
Furthermore, what would the deaths of so many royal dukes in such a short amount of time do to the image of the monarchy and its ability to operate independently from Parliament?