During World War I, the Prince of Wales made the acquaintance of Lady Rosemary Leveson-Gower, daughter of the 4th Duke of Sutherland, the latter of whom was serving as a VAD nurse. The prince was evidently very much in love, but George V refused to give his permission. Rosemary's family was problematic, to say the least - her mother had been married and separated from a homosexual divorcée, while her uncle was a well-known alcoholic gambler.
It may be an exaggeration, but it seems the prince was so angered by this he gave up on trying to find an acceptable bride.
Is it somehow possible for George V to accept the match, and how could it affect the United Kingdom and the Empire going forward?