Princess Nadejda Petrovna of Russia (Russian: Надежда Петровна; 3 March 1898 – 21 April 1988) was the third child of Grand Duke Peter Nikolaevich of Russia and his wife Grand Duchess Militza.

Nadejda was engaged before the outbreak of World War I

World War I

World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...

 to Prince Oleg Constantinovich of Russia

Prince Oleg Constantinovich of Russia

Prince Oleg Konstantinovich of Russia , was a son of Grand Duke Konstantin Konstantinovich.He died of wounds suffered in battle against the Germans during World War I.-Early life:...

, who was killed in action. She married Prince Nicholas Vladimirovich Orlov

Orlov

Orlov is the name of a Russian noble family which produced several distinguished statesmen, diplomatists and soldiers. The family first gained distinction in the person of four Orlov brothers, of whom the senior was Catherine the Great's paramour, and the two junior were notable military...

 (1891–1961) in the Crimea in April 1917. They were among the Romanovs who escaped the Russian Revolution in 1919 aboard the British ship the HMS Marlborough

HMS Marlborough (1912)

HMS Marlborough was an Iron Duke-class battleship of the Royal Navy, named in honour of John Churchill, 1st Duke of Marlborough, and launched in 1912. In World War I she served in the 1st Battle Squadron of the Grand Fleet based at Scapa Flow...

. Their baby daughter Princess Irina Orlova, born in March 1918, was the youngest passenger aboard the ship.

The Orlovs had two daughters :

• Princess Irina Nikolaievna Orlova (27 March 1918 – 16 September 1989); married 1st Rome 27 March 1940 (divorced 1946) Baron Hans von Waldstatten (1918–1977); m. 2nd The Hague 8 January 1960 Anthony Adam-Zylstra (1902–1982)
• Princess Xenia Nikolaievna Orlova (27 March 1921 - 17 August 1963); married 1st Avon 27 March 1940 (divorced 1950) Paul-Marcel De Montaignac de Pessotte (1909 -); m. 2nd Paris 14 March 1951 Chevalier Jean Albert d'Almont (1909–2003)

Princess Nadejda divorced in 1940. She died in Chantilly

Chantilly, Oise

Chantilly is a small city in northern France. It is designated municipally as a commune in the department of Oise.It is in the metropolitan area of Paris 38.4 km...

, France

France

The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

in 1988. Her daughters left descendants.