Donna Harun
Donna Harun( born February 21, 1968) is an Indonesian actress and model of Dutch- Indonesian descent.
She is the mother of actor Ricky Harun and mother- in- law of the actress and model Herfiza Novianti.
Marian Shields Robinson
Marian Lois Robinson( née Shields; born July 29, 1937) is the mother of Michelle Obama, former First Lady of the United States, and Craig Robinson, a basketball executive, and the mother- in- law of former U.S. President Barack Obama.
Maria Thins
Maria Thins( c. 1593 – 27 December 1680) was the mother- in- law of Johannes Vermeer and a member of the Gouda Thins family.
Baroness Gösta von dem Bussche-Haddenhausen
Baroness Gösta von dem Bussche- Haddenhausen( 26 January 1902 – 13 June 1996) was the mother of Prince Claus of the Netherlands, who was the Prince Consort of Queen Beatrix of the Netherlands, thus making her the mother- in- law of the former Dutch Queen.
She is also the paternal grandmother of King Willem- Alexander of the Netherlands, who is the current Dutch King.
Doria Ragland
Doria L. Ragland( born September 2, 1956) is the mother of Meghan, Duchess of Sussex, the mother- in- law of Prince Harry, and the maternal grandmother of Archie Mountbatten- Windsor, who is seventh in line to the British throne.
She is a former makeup artist, business owner, yoga instructor, and former social worker who worked in the mental health sector from 2015 to 2018.
Priscilla Pointer
Priscilla Marie Pointer( born May 18, 1924) is an American stage, film and television character actress.
She began her career in the theater, including productions on Broadway.
Later, Pointer moved to Hollywood to act in films and on television.
She is the mother of Amy Irving, therefore making her the former mother- in- law of filmmakers Steven Spielberg and Bruno Barreto and the mother- in- law of documentary filmmaker Kenneth Bowser, Jr.
Vera Miletić
Vera Miletić (Serbian Cyrillic: Вера Милетић; 8 March 1920 – 7 September 1944) was a Serbian student and soldier.
She was notable for being the mother of Mira Marković, posthumously making her the mother-in-law of Serbian president Slobodan Milošević.
Charles Somerset, 1st Earl of Worcester
Charles Somerset, 1st Earl of Worcester, (c. 146015 March 1526) was an English nobleman and politician.
He was the legitimised bastard son of Henry Beaufort, 3rd Duke of Somerset by his mistress Joan Hill.
Eldon Howard
Eldon Howard was a British screenwriter.
She was the mother- in- law of Edward J. Danziger and wrote a number of the screenplays for films by his company Danziger Productions.
Elizabeth Somerset, Baroness Herbert
Elizabeth Herbert, 3rd Baroness Herbert (c. 1476 – 27 August 1507) was the sole heir and daughter of William Herbert, 2nd Earl of Pembroke, and his first wife, Mary Woodville.
Her father died on 16 July 1491, and she inherited extensive lands in Wales.
As her father had no sons, she succeeded to his barony, but could not succeed to the earldom, which was restricted to the male line.
She was made a ward of King Henry VII of England, and married Charles Somerset, 1st Earl of Worcester on 2 June 1492.
Their only son, Henry, was born in around 1496.
In 1504, Somerset was created Baron Herbert.
Elizabeth died on 27 August 1507, and was buried in St George's Chapel, Windsor Castle.
The following month, further estates, including the lease of Caldicot Castle, devolved on Elizabeth's husband on the death of her uncle, Sir Walter Herbert.
The addition of Herbert's estate made Somerset the most powerful landowner in South Wales.
He had married for a second time by 1511, and was made Earl of Worcester in 1514.

Question: Who is Elizabeth Somerset, Baroness Herbert's mother-in-law?
Answer: Joan Hill