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.
Mary Billings French
Mary Montagu Billings French (March 6, 1869 – 1951) was an American heiress and society figure, as well as YWCA president and board member.
She was the daughter of Frederick Billings and inherited the Marsh-Billings-Rockefeller National Historical Park from him before she died.
She passed it on to her daughter, Mary French Rockefeller.
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.
Mary French Rockefeller
Mary French Rockefeller (May 1, 1910 – April 17, 1997) was an heiress, socialite, philanthropist, and a member of the extensive Rockefeller family.
She was married to Laurance Rockefeller, son of John Davison Rockefeller Jr. and Abby Aldrich Rockefeller.
She was the mother of Laura Rockefeller Chasin, Marion Rockefeller Weber, Lucy Rockefeller Waletzky, and Laurance Spelman Rockefeller Jr.
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
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
Laura Rockefeller Chasin
Laura Spelman
Rockefeller( October 11, 1936 – November 17, 2015) was an American philanthropist.
She was the eldest child of Laurance Spelman Rockefeller( 1910 – 2004) and Mary French( 1910 – 1997), and a fourth generation member of the Rockefeller family.
She has two younger sisters, Marion, Lucy Aldrich Rockefeller, and a younger brother, Laurance Spelman Rockefeller Jr..
Her patrilineal great- grandfather was Standard Oil's co-founder John D. Rockefeller and her matrilineal great- grandfather was Frederick H. Billings, a president of Northern Pacific Railway.
Both of her grandmothers, Mary Billings French and Abby Aldrich Rockefeller, were important to the early development of YWCA USA.
Chasin is known as the founder, former executive director, and former board member of the Public Conversations Project in Watertown, Massachusetts.
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.
Romanos Argyros (10th century)
Romanos Argyros was a Byzantine aristocrat and son-in- law of Emperor Romanos I Lekapenos.

Question: Who is the child-in-law of Mary Billings French?