HRH Crown Prince Alexander II as a very young boy
HRH Crown Prince Alexander II was born on 17 July 1945 in Claridge's Hotel in London. In order for the heir to the throne to be born on Yugoslav territory, the British Government under the orders of Prime Minister Sir Winston Churchill declared suite 212 in Claridge's Hotel Yugoslav territory. His Holiness Patriarch Gavrilo of Serbia baptized the newborn Crown Prince in Westminster Abbey with Godparents King George VI and HRH Princess Elizabeth (now HM The Queen Elizabeth II).
From the Facebook page:
HRH Crown Prince Alexander II of Serbia.
On the portrait hanging on the wall are pictured
King Peter I of Serbia, his great grandfather,
and King Alexander I of Yugoslavia, his grandfather.
Royal wedding - Piers Morgan [CNN] interview with HRH Crown Prince Alexander II of Serbia FULL INTERVIEW 
Posted on You Tube by "RoyalSerbianChannel"
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