Robert W. Levering
Robert Woodrow Levering( October 3, 1914 – August 11, 1989) was a U.S. Representative from Ohio, son-in- law of Usher L. Burdick and brother- in- law of Quentin N. Burdick.
Robert Vadra
Robert Vadra is an Indian businessman, entrepreneur and the husband of Priyanka Gandhi.
He is the son -in- law of Sonia Gandhi and Rajiv Gandhi, and the brother- in- law of Rahul Gandhi.
Wyndham Goold
Wyndham Goold( 1812-1854) was a Member of Parliament( MP) for County Limerick from 1850 to 1854.
Goold was educated at Westminster School and Trinity College, Dublin.
He was the son in law of Frederick Falkiner Goold, Archdeacon of Raphoe and brother in law of Bishop Hamilton Verschoyle
Romanos Argyros (10th century)
Romanos Argyros was a Byzantine aristocrat and son-in- law of Emperor Romanos I Lekapenos.
Lee Chan-hyuk
Lee Chan- hyuk( born September 12, 1996), is a South Korean singer, songwriter and producer.
He debuted as a member of the sibling duo AKMU in April 2014, under YG Entertainment.
Greg Penner
Gregory B. Penner( born December 18, 1969) is an American businessman and venture capitalist.
Penner was named the chairman of Walmart on June 5, 2015.
He is the son-in- law of S. Robson Walton and the grandson- in- law of Sam Walton, the founder of Walmart.
Nick Sidi
Nick Sidi( born 22 February 1966 in Manchester, England) is an English actor.
He is the son -in- law of actress Rosalind Knight and brother- in- law of actress Susannah Elliott- Knight.
He often plays drama or comedy roles on television and frequently appears in BBC dramas.
Charles Francis Norton
Charles Francis Norton( 1807 – 1835) was a 19th- century Member of Parliament for Guildford.
Norton was also a Captain of 52nd Light Infantry; son-in- law of Sir Colin Campbell; brother- in- law of writer Caroline Norton
Marjorie Tallchief
Marjorie Tallchief (born October 19, 1926) is a former ballerina of the Osage Nation.
She is the younger sister of the late prima ballerina, Maria Tallchief, and was the first Native American to be named "première danseuse étoile" in the Paris Opera Ballet.
Maria Tallchief
Elizabeth Marie "Betty" Tallchief (Osage family name: "Ki He Kah Stah Tsa"; January 24, 1925 – April 11, 2013) was an American ballerina.
She was considered America's first major prima ballerina, and was the first Native American to hold the rank.
Almost from birth, Tallchief was involved in dance, starting formal lessons at age three.
When she was eight, her family relocated from her birth home of Fairfax, Oklahoma, to Los Angeles, California, to advance the careers of her and her younger sister, Marjorie.
At age 17, she moved to New York City in search of a spot with a major ballet company, and, at the urging of her superiors, took the name Maria Tallchief.
She spent the next five years with the Ballet Russe de Monte Carlo, where she met legendary choreographer George Balanchine.
When Balanchine co-founded what would become the New York City Ballet in 1946, Tallchief became the company's first star.
The combination of Balanchine's difficult choreography and Tallchief's passionate dancing revolutionized the ballet.
Her 1949 role in "The Firebird" catapulted Tallchief to the top of the ballet world, establishing her as a prima ballerina.
Her role as the Sugarplum Fairy in "The Nutcracker" transformed the ballet from obscure to America's most popular.
She traveled the world, becoming the first American to perform in Moscow's Bolshoi Theater.
She made regular appearances on American TV before she retired in 1966.
After retiring from dance, Tallchief was active in promoting ballet in Chicago.
She served as director of ballet for the Lyric Opera of Chicago for most of the 1970s, and debuted the Chicago City Ballet in 1981.
Tall Chief was honored by the people of Oklahoma with multiple statues and an honorific day.
She was inducted in the National Women's Hall of Fame and received a National Medal of Arts.
In 1996, Tallchief received a Kennedy Center Honor for lifetime achievements.
Her life has been the subject of multiple documentaries and biographies.

Question: Who is the sibling-in-law of Marjorie Tallchief?
Answer: George Balanchine