Descendants of Grand Duchess Maria Kirillovna are very closely related to the British royal family and are descended through Queen Victoria via her 2nd son. Their surnames are Bauscher, Leiningen , and Hohenzollern.
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All of the great grandchildren of the Grand Duchess are 4th cousins to Prince William. For example " Franka Bauscher" (age 12) is one of her great grandchildren.
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In the line of succession they are in the low 100's. They would have very close relations to many of the royal houses in Europe (even if you are not a prince or princess). The "Sophia Nationalization Act" might apply.
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The official royal website only posts the first 40 people in the line of succession, but many other websites post more names . The "WARGS" site in the source lists all 5000 people as of 1 Jan 2001. However, the geneologist makes no attempt to eliminate Catholics from the list.
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*G| Death |Name (Regal #),Title|Birth|
*0| alive |Franka Bauscher,no title (1st child)|12-Sep-1996|
*1| alive |Berthold Bauscher,no title (2nd child)|31-Oct 1965|
*2| alive |Mechtilde Bauscher,Princess of Leiningen|2-Jan-1936|
*3|25-Oct-1951|Maria Kirillovna,Grand Duchess|2-Feb-1907|
*4| 2-Mar-1936|Victoria,Grand Duchess|1876|
*5|30-Jul-1900|Afred,Duke of Edinburgh|1844|
*6|22-Jan-1901|Victoria ,Queen of U.K.|1819|
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*G| Death |Name (Regal #),Title|Birth|
*0| alive |William,Prince |21-Jun-1982|
*1| alive |Charles,Prince of Wales|14-Nov-1948|
*2| alive | Elizabeth II,Queen of U.K. |21-Apr-1926|
*3| 6-Feb-1952| George VI ,King of U.K. |1895|
*4|20-Jan-1936| George V ,King of U.K. |1865|
*5| 6-May-1910| Edward VII ,King of U.K.|1841|
*6|22-Jan-1901|Victoria ,Queen of U.K.|1819|
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Princess Mechtilde was not raised like a princess. She had a very difficult childhood, full of a lot of sorrow.
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Maria Kyrilovna of Russia (February 2, 1907 – October 25, 1951)
married Friedrich Karl (13 February 1898 – 2 August 1946),
the hereditary prince of Leiningen.
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Here is a list of their children.
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# Emich Kirill Ferdinand Hermann (October 18, 1926 – October 30, 1991)
# Karl Vladimir Ernst Heinrich (January 2, 1928 – September 28, 1990)
# Kira Melita Feodora Marie Victoria Alexandra (July 18, 1930 – September 24, 2005); married Prince Andrej of Yugoslavia
# Margarita Ileana Victoria (May 9, 1932 – June 16, 1996)
# Mechtilde Alexandra (b. January 2, 1936)
# Friedrich Wilhelm Berthold (June 18, 1938 – August 29, 1998)
# Peter Victor (December 23, 1942 – January 12, 1943)
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I think this is a complete list of 17 great grandchildren (although I may be missing some under the age of 8).
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-- Erik Bauscher (*1998)
-- Franka Bauscher (*1996)
-- Lorenz Bauscher (*2002)
-- Cecilia v Leiningen (*1988)
-- Theresa v Leiningen (*1992)
-- Ferdinand ErbPz v Leiningen (*1982)
-- Hermann Pz v Leiningen (*1987)
-- Olga v Leiningen (*1984)
-- Nicholas Pz v Leiningen (*1991)
-- Tatiana v Leiningen (*1989)
-- Nadia v Leiningen (*1991)
-- Alexandra v Leiningen (*1997)
-- Alexander Pz v Hohenzollern (*1987)
-- Philippa v Hohenzollern (*1988)
-- Flaminia v Hohenzollern (*1992)
-- Antonia v Hohenzollern (*1995)
-- Alois Pz v Hohenzollern (*1999)