This only son of Prince Andrew of Greece became a British subject in 1947 & gained a dukedom
[DOC] [TLE] Philip, duke of Edinburgh | British prince | Britannica.com [PAR] Alternative Titles: Philip Mountbatten, Philip, prince of Greece and Denmark, ... 
1947, Philip became a British subject, renouncing his right to the Greek and ... 
who married Prince Andrew of Greece (18821944); their only son, Prince ....