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.
Anne Devereux-Mills
Anne Devereux- Mills( born March 2, 1962) is an American businesswoman, speaker, and entrepreneur.
Anne Devereux- Mills spent the first 25 years of her career building and leading advertising agencies in New York City.
She is now the Chief Instigator( and Founder) of Parlay House, a 1000+ member organization in San Francisco that champions and inspires women to connect and make meaningful change for themselves and for others.
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.
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.
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
Angelitha Wass
Angelitha Wass( 15th century – after 1521) was a Hungarian lady's maid of Anne of Foix- Candale, Queen consort of Bohemia and Hungary, and later a mistress of Anne's son, Louis II Jagiellon, King of Hungary.
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 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.
Anne Devereux
Anne Devereux, Countess of Pembroke (c. 1430 – after 25 June 1486), was an English noblewoman, who was Countess of Pembroke during the 15th century by virtue of marriage to William Herbert, 1st Earl of Pembroke.
She was born in Bodenham, the daughter of Sir Walter Devereux, the Lord Chancellor of Ireland, and his wife Elizabeth Merbury.
Anne's grandfather, Walter, was the son of Agnes Crophull.
By Crophull's second marriage to Sir John Parr, Anne was a cousin to the Parr family which included Sir Thomas Parr; father of King Henry VIII's last queen consort, Catherine Parr.
William Herbert, 1st Earl of Pembroke (died 1469)
William Herbert, 1st Earl of Pembroke (c. 142327 July 1469), known as "Black William", was a Welsh nobleman, soldier, politician, and courtier.
He was the son of William ap Thomas, founder of Raglan Castle, and Gwladys ferch Dafydd Gam, and grandson of Dafydd Gam, an adherent of King Henry V of England.
His father had been an ally of Richard of York, and Herbert supported the Yorkist cause in the Wars of the Roses.
In 1461 Herbert was rewarded by King Edward IV with the title Baron Herbert of Raglan (having assumed an English-style surname in place of the Welsh patronymic), and was invested as a Knight of the Garter.
Soon after the decisive Yorkist victory at the Battle of Towton in 1461, Herbert replaced Jasper Tudor as Earl of Pembroke which gave him control of Pembroke Castle.
However, he fell out with Lord Warwick "the Kingmaker" in 1469, when Warwick turned against the King.
Herbert was denounced by Warwick and the Duke of Clarence as one of the king's "evil advisers".
William and his brother Richard were executed by the Lancastrians, now led by Warwick, after the Battle of Edgecote Moor, near Banbury.
Herbert was succeeded by his son, William, but the earldom was surrendered in 1479.
It was later revived for a grandson, another William Herbert, the son of Black William's illegitimate son, Sir Richard Herbert of Ewyas.

Question: Who is the sibling-in-law of Anne Devereux?
Answer: Richard Herbert