He took part in the ship tour organized by
Queen Frederica and her husband King
Paul of Greece in 1954, which became known as the “
Cruise of the Kings” and was attended by over 100 royals from all over Europe. On the royal yacht
Agamemnon, he met his future wife. On 12 February 1955, Alexander married
Princess Maria Pia of Savoy, daughter of King
Umberto II of Italy and of his wife, Princess
Marie José of Belgium. The marriage took place at
Cascais in Portugal where the bride's father was living in exile. The couple had met on 22 August 1954 during the royal cruise of the
Agamemnon, hosted by
King Paul and
Queen Frederica of Greece. Alexander and Maria Pia have twin sons born in 1958: •
Prince Dimitri Umberto Anton Peter Maria of Yugoslavia (born 18 June 1958) • Prince Michael Nicolas Paul George Maria of Yugoslavia (born 18 June 1958) Another set of twins was born five years later, this time a girl and a boy: • Prince Sergius "Serge" Wladimir Emanuel Maria of Yugoslavia (born 12 March 1963); married Sophia de Toledo on 6 November 1985. They divorced in 1986. He was remarried to Eleonora Rajneri on 18 September 2004. He has a child named Umberto Emmanuel Dimitri, with Christiane Galeotti, born in 2018. • Princess Helene Olga Lydia Tamara Maria of Yugoslavia (born 12 March 1963); married Thierry Gaubert on 12 January 1988. The couple divorced and she remarried to Stanislas Fougeron on 12 March 2018. Alexander and Maria Pia divorced in 1967, and in 2003 she married
Prince Michel of Bourbon-Parma, himself divorced from Princess Yolande de
Broglie-Revel. On 2 November 1973, in a civil ceremony in
Paris, Alexander married Princess Barbara Eleonore Marie of
Liechtenstein(born 9 July 1942), daughter of Prince Johannes of Liechtenstein (first cousin once removed to
Prince Hans-Adam II of Liechtenstein) and Countess Karoline of
Ledebur-Wicheln (aunt of Hans Adam's late wife
Marie, Princess of Liechtenstein). On 28 October 1995 Prince Alexander and Princess Barbara were married in the Orthodox faith in
Oplenac, and had issue: • Prince Dušan Paul of Yugoslavia (born 25 September 1977), married in a civil ceremony Valerie DeMuzio on 3 July 2018 in New York, USA. On 25 May 2019 they were married in the Orthodox faith in
Oplenac,
Serbia. ==Flying career==