Peter is the first son and the oldest child of the last Crown Prince of the former Kingdom of Yugoslavia, Alexander, and Princess Maria da Gloria of Orléans-Braganza.

Through his mother, Peter has two younger half-sisters, Sol María de la Blanca Medina y Orléans-Braganza, Countess of Ampurias (b.

[4][5] In June 1998, Peter graduated from The King's School, Canterbury, in England, having obtained three A-levels in Art, Spanish, and French, and ten GCSEs.

The event gathered 400 guests, including Carl XVI Gustaf of Sweden and Albert II of Monaco among others.

The ceremony took place in Seville at Casa de Pilatos in the presence of his mother Princess Maria da Gloria, his stepfather the 19th Duke of Segorbe, his brother Philip, his sister-in-law Princess Danica, his half sister the 54th Countess of Ampurias, Ljubodrag Grujić, member of the Crown Council, Chancellor of the Orders and the Herald of the House of Karađorđević, and Nikola Stanković, Chief of Staff of the Crown Prince.

[14] Prince Peter used to work in a field of graphic design and art direction in London and New York City.

Through his father, Peter descends from kings Nicholas I of Montenegro, Ferdinand I of Romania, Christian IX of Denmark and Alexander of Greece, and furthermore from emperors Nicholas I of Russia and Frederick III of the Germans and Queen Victoria of the United Kingdom of Great Britain and Ireland.