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.
Eusebius (consul 359)
Flavius Eusebius( died after AD 371) was a Roman Senator, who was the brother- in- law of the emperor Constantius II.
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.
Myrlie Evers-Williams
Myrlie Louise Evers–Williams (née Beasley; born March 17, 1933) is an American civil rights activist and journalist who worked for over three decades to seek justice for the 1963 murder of her husband Medgar Evers, another civil rights activist.
She also served as chairwoman of the NAACP, and published several books on topics related to civil rights and her husband’s legacy.
On January 21, 2013, she delivered the invocation at the second inauguration of Barack Obama.
Hypatius (consul 359)
Flavius Hypatius( c. 340- died after AD 383) was a Roman Senator, who was the brother- in- law of the Roman emperor Constantius II.
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
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.
Medgar Evers
Medgar Wiley Evers (July 2, 1925June 12, 1963) was an American civil rights activist in Mississippi, the state's field secretary for the NAACP, and a World War II veteran who had served in the United States Army.
He worked to overturn segregation at the University of Mississippi, end the segregation of public facilities, and expand opportunities for African Americans, which included the enforcement of voting rights.
A college graduate, Evers became active in the Civil Rights Movement in the 1950s.
Following the 1954 ruling of the United States Supreme Court in "Brown v. Board of Education" that segregated public schools were unconstitutional, Evers challenged the segregation of the state-supported public University of Mississippi, applying to law school there.
He also worked for voting rights, economic opportunity, access to public facilities, and other changes in the segregated society.
Evers was awarded the 1963 NAACP Spingarn Medal.
Evers was assassinated in 1963 by Byron De La Beckwith, a member of the White Citizens' Council in Jackson, Mississippi.
This group was formed in 1954 in Mississippi to resist the integration of schools and civil rights activism.
As a veteran, Evers was buried with full military honors at Arlington National Cemetery.
His murder and the resulting trials inspired civil rights protests; his life and these events inspired numerous works of art, music, and film.
All-white juries failed to reach verdicts in the first two trials of Beckwith in the 1960s.
He was convicted in 1994 in a new state trial based on new evidence.
Medgar's widow, Myrlie Evers, became a noted activist in her own right, serving as national chair of the NAACP.
His brother Charles Evers was the first African American to be elected as mayor of a city in Mississippi in the post-Reconstruction era; he won the office in 1969 in Fayette.
William Gibson (NAACP activist)
William F. Gibson (September 7, 1933 – May 2, 2002) was an African-American dentist who served as chair of the National Association for the Advancement of Colored People (NAACP) from 1985 to 1995.
Gibson was a graduate of North Carolina A&T State University and Meharry Medical College.
He served as president of the NAACP's regional branch in Greenville, South Carolina before succeeding Margaret Bush Wilson as national chairperson.
As chair, he encouraged voter registration and worked to increase economic opportunities for African Americans.
However, his handling of finances was controversial, and the NAACP found itself with a $4 million deficit in 1995.
That year, NAACP board members voted 30–29 to replace Gibson with Myrlie Evers-Williams, widow of Medgar Evers.
Gibson died of cancer at the age of 69 in Greenville on May 2, 2002.

Question: Who is Myrlie Evers-Williams's sibling-in-law?
Answer: Charles Evers