E. Pierce Marshall
Everett Pierce Marshall (January 12, 1939 – June 20, 2006) was an American petroleum industry executive.
He was the beneficial owner of 16% of Koch Industries, which he received as an inheritance from his father, J. Howard Marshall II.
He spent the last 15 years of his life as a defendant in lawsuits by his stepmother, Anna Nicole Smith, and his brother, J. Howard Marshall III, who both sought part of his father's fortune after being left out of the will and testament.
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.
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
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.
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.
Elaine Tettemer Marshall
Elaine Tettemer Marshall (born July 22, 1942) is an American billionaire as a result of an inheritance.
Trusts for the benefit of Marshall and her sons own the 16% beneficial interest in Koch Industries; formerly owned by her husband, E. Pierce Marshall, to whom she was married from 1965 until his death in 2006.
These shares were previously owned by her father in-law, J. Howard Marshall, who was married to Anna Nicole Smith in the last year of his life.
Elaine has been a member of the board of directors of Koch Industries since the 2006 death of her husband.
Eusebius (consul 359)
Flavius Eusebius( died after AD 371) was a Roman Senator, who was the brother- in- law of the 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.

Question: Who is the sibling-in-law of Elaine Tettemer Marshall?
Answer: J. Howard Marshall III