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.
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
Charlotte Howe, Viscountess Howe
( Mary Sophia) Charlotte Howe, Viscountess Howe( 23 September 1703 – 13 June 1782) was a Hanover- born British courtier and politician.
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
Samuel Bentham
Sir Samuel Bentham (11 January 1757 – 31 May 1831) was a noted English mechanical engineer and naval architect credited with numerous innovations, particularly related to naval architecture, including weapons.
He was the only surviving sibling of philosopher Jeremy Bentham, with whom he had a close bond.
Mary Sophia Bentham
Mary Sophia Bentham (1765 – 1858) was a British botanist and author.
Bentham was daughter of chemist George Fordyce, wife of mechanical engineer Samuel Bentham, and mother of botanist George Bentham.
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.
Murder of Mary Money
Mary Sophia Money is the victim of an unsolved murder in Surrey, England, from 1905.

Question: Who is the sibling-in-law of Mary Sophia Bentham?
Answer: Jeremy Bentham