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
Friedrich Münter
Fried(e)rich Christian Carl Heinrich Münter (14 October 1761 – 9 April 1830) was a German-Danish scholar, professor of theology at the University of Copenhagen, orientalist, church historian, archaeologist, Danish bishop of Zealand, and freemason.
He was a brother of Sophie Christiane Friederike Brun.
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
Friederike Brun
Friederike Brun, née "Münther" (3 June 1765 – 25 March 1835), was a Danish author and salonist.
She was married to the affluent merchant Constantin Brun and during the Danish Golden Age of the first half of the 19th century she arranged literary salons at Sophienholm, their summer retreat north of Copenhagen.
She is known for writing the poem "Chamouny at Sunrise" which was the original of Samuel Taylor Coleridge's "Hymn in the Vale of Chamouni".
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.
Romanos Argyros (10th century)
Romanos Argyros was a Byzantine aristocrat and son-in- law of Emperor Romanos I Lekapenos.
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.
Lee Chan-hyuk
Lee Chan- hyuk( born September 12, 1996), is a South Korean singer, songwriter and producer.
He debuted as a member of the sibling duo AKMU in April 2014, under YG Entertainment.
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.

Question: Who is Friedrich Münter's sibling-in-law?
Answer: Constantin Brun