Prince Henry (known practically universally as Harry) - Duke of Sussex
And George VI was actually called Albert (as was Edward VII) but I don't think anyone actually got upset when they used a different name.
:facepalm:
With all the Royal chitter chatter going around it prompted a discussion in the office about titles and suchlike. After a quick spin around the wiki I stumbled across the fact (as much as wikipedia deals in such things) that Prince Harry has been promised the title "Duke of Sussex" when he gets...