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.
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.
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.
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.
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.
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.
Ælfgifu of York
Ælfgifu of York (fl. c. 970 – 1002) was the first wife of Æthelred the Unready (r. 968–1016), by whom she bore many offspring, including Edmund Ironside.
It is most probable that she was a daughter of Thored, Earl of southern Northumbria.
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.
Æthelred the Unready
Æthelred II (Old English: "Æþelræd", ; 966 – 23 April 1016), known as the Unready, was King of the English from 978 to 1013 and again from 1014 until his death.
His epithet does not derive from the modern word "unready", but rather from the Old English "unræd" meaning "poorly advised"; it is a pun on his name, which means "well advised".
Æthelred was the son of King Edgar and Queen Ælfthryth.
He came to the throne at about the age of 12, following the assassination of his older half-brother, Edward the Martyr.
His brother's murder was carried out by supporters of his own claim to the throne, although he was too young to have any personal involvement.
The chief problem of Æthelred's reign was conflict with the Danes.
After several decades of relative peace, Danish raids on English territory began again in earnest in the 980s.
Following the Battle of Maldon in 991, Æthelred paid tribute, or Danegeld, to the Danish king.
In 1002, Æthelred ordered what became known as the St. Brice's Day massacre of Danish settlers.
In 1013, King Sweyn Forkbeard of Denmark invaded England, as a result of which Æthelred fled to Normandy in 1013 and was replaced by Sweyn.
However, he returned as king for two years after Sweyn's death in 1014.
Æthelred's 37-year reign was the longest of any Anglo-Saxon king of England, and was only surpassed in the 13th century, by Henry III.
Æthelred was briefly succeeded by his son, Edmund Ironside, but he died after a few months and was replaced by Sweyn's son, Cnut.
Another of Æthelred's sons, Edward the Confessor, became king in 1042.
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.

Question: Who is Ælfgifu Of York's mother-in-law?
Answer: Ælfthryth