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.
Marek Benda
Marek Benda( born 10 November 1968 is a Czech politician and member of the Civic Democratic Party.
He is currently the longest serving member of the Chamber of Deputies of the Czech Republic.
He is son of Václav Benda.
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.
Václav E. Beneš
Václav Edvard "Vic" Beneš (born January 1, 1931) is a Czech-American mathematician, known for his contributions to the theory of stochastic processes, queueing theory and control theory, as well as the design of telecommunications switches.
He studied under John Kemeny and gained a doctorate in mathematics at Princeton University (1953) on a treatise on "Mathematical logic".
He then worked for Bell Labs until 1986, contributing to Kalman filter theory as well as the Beneš network, a permutation network of the Clos network type.
In the 1980s he held a position at Columbia University as well.
He has continued to publish independently since 1989.
He was elected IEEE Fellow (1991) for "contributions to the structure of telephone connecting networks, stochastic control, and nonlinear filtering".
The "Benesfest" was celebrated at Columbia University (2001) to honor his 70th birthday.
He resides in Millburn, New Jersey (since 1985) where he has been a long-time mountain climber and member of the American Alpine Club, and currently heads the local historical society.
He is a relative of the former President of Czechoslovakia Edvard Beneš and politician Vojta Beneš.
Emilie Benes Brzezinski, a sculptor, is his sister.
His first wife Janet was the daughter of Philip Franklin and niece of Norbert Wiener.
Emilie Benes Brzezinski
Emilie Beneš Brzezinski (born Emilie Anna Beneš; 1932) is an American sculptor and the widow of Zbigniew Brzezinski.
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
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.
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
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.
Jan Daněk
Jan Daněk( born 22 November 1982) is a Czech former footballer who played as a defender.
He played in the Czech First League for Baník Ostrava.
He is the son of Václav Daněk, who played football for Czechoslovakia as a striker.

Question: Who is Václav E. Beneš's sibling-in-law?
Answer: Zbigniew Brzezinski