Duchess Marie of Württemberg
Duchess Marie of Württemberg (Antoinette Friederike Auguste Marie Anna Herzogin von Württemberg; 17 September 1799 – 24 September 1860) was a daughter of Duke Alexander of Württemberg and Antoinette of Saxe-Coburg-Saalfeld.
She was Duchess of Saxe-Coburg and Gotha from 1832 to 1844 as the second wife of Duke Ernest I.
As such, she was the stepmother of Prince Albert, consort of Queen Victoria.
Prince Nikita Romanov
Prince Nikita Nikitich Romanov (13 May 1923 – 3 May 2007) was a British born, American historian and writer, author of a book about Ivan the Terrible.
He was a member of the Romanov family, a son of Prince Nikita Alexandrovich of Russia and a great nephew of Nicholas II of Russia, the last Tsar.
Verona Barnes
Verona Barnes( born December 29, 1946) is an American actress who appeared in multiple New York City theater plays.
She is the stepmother of actress Rachel True.
Her roles include Mrs. Harris and the Street Person in" All God's Chillun Got Wings," as well as Jack's friend in" The Great White Hope".
Dorothy Granger
Dorothy Karolyn Granger( November 21, 1911 – January 4, 1995) was an American actress best known for her roles in short subject comedies in Hollywood.
She was also the stepmother of film maker and former record producer Anthony J. Hilder.
Jane Wigham
Jane Wigham( née Smeal; 1801–1888) was a leading Scottish abolitionist.
She was the stepmother of Eliza Wigham and the second wife of John Wigham.
Irene Baker
Edith Irene Bailey Baker( November 17, 1901 – April 2, 1994) was an American politician and a United States Representative from Tennessee.
She was the widow of Howard Baker Sr. and the stepmother of Howard Baker Jr.
Prince Nikita Alexandrovich of Russia
Prince Nikita Alexandrovich of Russia (13 January 1900 – 12 September 1974) was the third son and fourth child of Grand Duke Alexander Mikhailovich of Russia and Grand Duchess Xenia Alexandrovna of Russia.
He was a nephew of Tsar Nicholas II of Russia.
Born in Imperial Russia during the reign of his uncle, Prince Nikita escaped the fate of many of his relatives who were killed by the Bolsheviks.
He left Russia in April 1919, at age nineteen.
In 1922 he married Countess Maria Vorontsova-Dashkova.
The couple had two children.
Henriette Feuerbach
Henriette Feuerbach( 13 August 1812 – 5 August 1892) was a German author and arts patron.
She was the wife of Joseph Anselm Feuerbach and the stepmother of painter Anselm Feuerbach, whom she supported in his art.
May Green Hinckley
May Green Hinckley( May 1, 1881 – May 2, 1943) was the third general president of the Primary of The Church of Jesus Christ of Latter- day Saints( LDS Church) from 1940 until her death.
She was the stepmother of Gordon B. Hinckley, fifteenth president of the LDS Church.
Susan Moody
Susan Moody( born 1940 in Oxford) is the principal" nom de plume" of Susan Elizabeth Horwood, an English novelist best known for her suspense novels.
After marrying Professor John Dalgleish Donaldson in 2001, she became the stepmother of his four children, including Crown Princess Mary of Denmark.

Question: Who is the mother of Prince Nikita Romanov?
Answer: Maria Vorontsova-Dashkova