Original sentence: Assuming that he lives into his mid-80s, there would then be a William reigning over England on the millennial anniversary of conquest of England by William I, better known as William the Conqueror, who established the modern state of England.Both Charles and William have a middle name "Arthur", leading some to fanciful speculation that a real king of that mythical name might reign some day as Arthur II
Edited sentence: Assuming that he lives into his mid-80s and the UK remains a monarchy, there would then be a William reigning over England on the millennial anniversary of conquest of England by William I, better known as William the Conqueror, who established the modern state of England.Both Charles and William have a middle name "Arthur", leading some to fanciful speculation that a real king of that mythical name might reign some day