The 20st Century Kings

Edward VIII says King after Churchill created a support party from the conservatives. Edward VIII lives to 1972 and dies with no children like our timeline. Because George dies in 1952 their brother Henry is King however because his health is bad his son William is king and so does not die in a plane crash however he later gets psychiatric symptoms from his porphyria like George III. As a result his brother Richard is acting King.
 
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