Sidney Mason Stone
Sidney Mason Stone (May 8, 1803 – August 10, 1882) was a prominent Connecticut architect and builder known for designs of churches, institutional buildings and residences.
His creations incorporated Greek Revival, Romanesque, Gothic, Italianate and other styles popular in the 19th century.
He served in several civic capacities in the city of New Haven and statewide and as mentor to Yale students prior to the establishment of that university's School of Architecture.
He was the father of Harriet Mulford Stone, better known to readers of children's literature as Margaret Sidney, creator of the "Five Little Peppers" series.
Harriett Lothrop
Harriett Lothrop was an American author also known by her pseudonym Margaret Sidney (June 22, 1844 – August 2, 1924).
In addition to writing popular children's stories, she ran her husband Daniel Lothrop's publishing company after his death.
After they bought The Wayside country house, they worked hard to make it a center of literary life.
Paul McHugh
Paul McHugh( born Gisborne) is a New Zealand academic lawyer.
He teaches at the University of Cambridge where he is a Professor in Law and Legal History and Fellow of Sidney Sussex College.
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
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
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.
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.
Bill Mason (footballer)
William Sidney Mason( 31 October 1908 – 1995) was an English professional football goalkeeper who played in the Football League for Queens Park Rangers and Fulham.
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.

Question: Who is the child-in-law of Sidney Mason Stone?
Answer: Daniel Lothrop