Check this out: Prince Philip's birth certificate

An infant Prince Philip. Image from REX/Shutterstock.

Prince Philip's birth certificate was unearthed in a municipal archive located at an old British Army barracks close to the prince's birth place a few days after he died. The municipal archive was located near  Mon Repos, the Greek royal family's holiday home on  the island of Corfu, Greece. 

The document  was handwritten in Katharevousa Greek, the conservative form of modern Greek, by priest named Spiriodon Tryfonas.

In the birth certificate, it was indicated that he was born 10am of May 28, 1921 , but his actual birth of June 10, 1921 was registered using old Julian calendar,  which was still in use in Greece even in the early 20th century.

Here is content of Prince Philip's birthday certificate, translated in English. 

“In Corfu, on October 24 of the year 1921, I, the undersigned vicar of the Church of Our Christ the Saviour, which is located in the grounds of the Royal Estate Mon Repos, declare that His Royal Highness Prince Andreas (Andrew) of Greece, aged 39, son of our late King George I, born in Athens and residing in Corfu, appeared before me.

He presented to me a newborn male infant, and stated that he was born on Friday May 28 1921 at 10am in his residence to Her Royal Princess Aliki (Alice), aged 36, daughter of Louis, Prince of Battenberg, born in Windsor Castle. 

During his baptism the newborn was given the name Philippos (Philip) by his godparents, namely Her Royal Majesty Queen Mother Olga, represented by Her Highness Princess Olga, daughter of His Royal Highness Prince Nikolaos of Greece, and the Municipality of the Corfiates, represented unanimously by Mayor Mr Alexandros S. Kokotos, and Mr Stylianos I. Maniarizis, president of the Municipal Council.

The hereby act of registration was compiled in presence of the witness, Theodoros Chrysovitsianos, son of Nikolaos, aged 45, doctor, born in Corfu, and Konstantinos Alamanos, son of Pericles, aged 39, lawyer, born in Corfu, and both municipal councils. 

The act of registration is legally signed by me, the appeared, and the witnesses."