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.
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
Richard Appel
Richard James Appel (born May 21, 1963) is an American writer, producer and former attorney.
Since 2012, he has served as an Executive Producer and co-showrunner of "Family Guy" on Fox.
He attended Harvard University and wrote for the "Harvard Lampoon".
Following in his mother's footsteps, Appel became a lawyer.
After attending law school, he started out as a law clerk for Judge John M. Walker Jr. before becoming a federal attorney, serving as assistant U.S. attorney for the United States District Court for the Southern District of New York for three years.
In 1994, he moved into comedy writing when he was hired for "The Simpsons", writing seven episodes of the show including "Mother Simpson".
He moved on to become showrunner and executive producer of "King of the Hill" before creating the sitcom "A.U.S.A.".
He then worked on "The Bernie Mac ShowFamily Guy" and "American Dad!"
before co-creating "The Cleveland Show".
He was married to the writer Mona Simpson.
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.
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
Mike Dillon (racing driver)
Mike Dillon is a former NASCAR Busch Series race car driver for Richard Childress Racing, and the current general manager for the team after having raced in all three national series.
He is the son-in- law of Richard Childress.
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.
Mona Simpson
Mona Simpson (née Jandali; June 14, 1957) is an American novelist.
She has written six novels and studied English at the University of California, Berkeley and Languages and Literature at Bard College.
She won a Whiting Award for her first novel, "Anywhere but Here" (1986).
It was a popular success and adapted as a film by the same name, released in 1999.
She wrote a sequel, "The Lost Father" (1992).
Critical recognition has included the "Chicago Tribune" Heartland Prize and making the shortlist for the PEN/Faulkner Award for her novel "Off Keck Road" (2000).
Simpson is the younger sister of the late Apple Inc. co-founder Steve Jobs.
Simpson was born after her parents had married and did not meet Jobs, who was placed for adoption after he was born, until she was 25 years old.
Romanos Argyros (10th century)
Romanos Argyros was a Byzantine aristocrat and son-in- law of Emperor Romanos I Lekapenos.

Question: Who is the sibling-in-law of Richard Appel?