Romanos Argyros (10th century)
Romanos Argyros was a Byzantine aristocrat and son-in- law of Emperor Romanos I Lekapenos.
Christian Bale
Christian Charles Philip Bale (born 30 January 1974) is an English actor who is known for his intense method acting style, often transforming his body drastically for his roles.
Bale is the recipient of many awards, including an Academy Award and two Golden Globes, and was featured in the Time 100 list of 2011.
Born in Haverfordwest, Wales, to English parents, Bale had his first starring role at age 13 in Steven Spielberg's war film "Empire of the Sun" (1987).
Following a decade of leading and supporting roles, including in "Little Women" (1994), he gained wider recognition for portraying the serial killer Patrick Bateman in "American Psycho" (2000).
In 2004, he lost 63 pounds for his role in the psychological thriller "The Machinist" (2004).
Within six months, he gained 100 pounds to star as Batman in Christopher Nolan's superhero film "Batman Begins" (2005).
He later reprised his role in the sequels "The Dark Knight" (2008)
and "The Dark Knight Rises" (2012).
Bale continued to take on starring roles, including in Nolan's period drama "The Prestige" (2006), the western  (2007), the science fiction film "Terminator Salvation" (2009), and the crime drama "Public Enemies" (2009).
He won the Golden Globe and Academy Award for Best Supporting Actor for his portrayal of Dicky Eklund in the David O. Russell-directed biographical film
"The Fighter" (2010).
This acclaim continued with his Oscar-nominated roles in Russell's black comedy "American Hustle" (2013) and in Adam McKay's satires "The Big Short" (2015) and "Vice" (2018).
For portraying Dick Cheney in the latter, he won a Golden Globe Award for Best Actor.
In 2019 he starred as race car driver Ken Miles in James Mangold's "Ford v Ferrari".
Bale's personal life and personality has been the subject of much public attention, despite his desire to keep a low profile.
He is a supporter of Sea Shepherd Conservation Society, Greenpeace, and the World Wildlife Fund, and obtained American citizenship in 2014.
Bale has been married to Sandra Blažić since 2000; they have two children.
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.
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.
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
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 Moffat (missionary)
Robert Moffat( 21 December 1795 – 9 August 1883) was a Scottish Congregationalist missionary to Africa, father- in- law of David Livingstone, and first translator of the Bible into Setswana.
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.
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.
David Bale
David Charles Howard Bale (2 September 1941 – 30 December 2003) was an English entrepreneur and an environmentalist animal rights activist.
He was the father of actor Christian Bale and the husband of Gloria Steinem.

Question: Who is the child-in-law of David Bale?
Answer: Sandra Blažić