Philip… Queen's husband. Head of the knights of Malta
The monarch (sovereign) of any country is there as a symbol of the sovereignty people of that land. They are the real sovereigns. Royal Assent must be used to protect the peoples of the land against tyrannical government, but since the crown was usurped, the "royals" only serve their paymasters.
This is why it doesn't matter who Harry marries, he's the bastard son of an already illegitimate line
Every royal has papal investiture. The pope is the only one who can crown a royal on "behalf" of God. And they all claim their right to rule comes from God. This is where the rug was pulled