Diego, Prince of Asturias
Diego Félix of Austria, Prince of Asturias and Portugal( August 15, 1575 – November 21, 1582) was the fourth son of Philip II of Spain, and also his third son by his fourth wife Anna of Austria.
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.
Philip II of Spain
Philip II of Spain (21 May 1527 – 13 September 1598) was King of Spain (1556–98), King of Portugal
(1581–98, as Philip I), King of Naples and Sicily (both from 1554), and "jure uxoris" King of England and Ireland (during his marriage to Queen Mary I from 1554 to 1558).
He was also Duke of Milan, and from 1555, lord of the Seventeen Provinces of the Netherlands.
The son of Holy Roman Emperor and King of the Spanish kingdoms Charles V and Isabella of Portugal, Philip was called "Felipe el PrudentePhilip the Prudent") in the Spanish kingdoms; his empire included territories on every continent then known to Europeans, including his namesake the Philippines.
During his reign, the Spanish kingdoms reached the height of its influence and power.
This is sometimes called the "Spanish Golden Age".
Philip led a highly debt-leveraged regime, seeing state bankruptcies in 1557, 1560, 1569, 1575, and 1596.
This policy was partly the cause of the declaration of independence that created the Dutch Republic in 1581.
On 31 December 1584 Philip signed the Treaty of Joinville, with Henry I, Duke of Guise signing on behalf of the Catholic League; consequently Philip supplied a considerable annual grant to the League over the following decade to maintain the civil war in France, with the hope of destroying the French Calvinists.
A devout Catholic, Philip saw himself as the defender of Catholic Europe against the Ottoman Empire and the Protestant Reformation.
He sent a large armada to invade Protestant England in 1588, with the strategic aim of overthrowing Elizabeth I of England and re-establishing Catholicism there.
He hoped to stop both English interference in the Spanish Netherlands and the harm caused to Spanish interests by English and Dutch privateering.
Philip was described by the Venetian ambassador Paolo Fagolo in 1563 as "slight of stature and round-faced, with pale blue eyes, somewhat prominent lip, and pink skin, but his overall appearance is very attractive".
The Ambassador went on to say "He dresses very tastefully, and everything that he does is courteous and gracious."
Besides Mary I, Philip was married three other times and widowed four times.
Helena Antonia
Helena Antonia( 1550 – 1595) was a bearded female court dwarf of Maria of Austria, Holy Roman Empress and was a favorite of Margaret of Austria, Queen of Spain, and also a lady- in- waiting for Constance of Austria.
She was born in Liège.
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.
Maria Anna of Savoy
Maria Anna of Savoy( 19 September 1803 – 4 May 1884) was Empress of Austria and Queen of Hungary( see Grand title of the Empress of Austria) by marriage to Emperor Ferdinand I of Austria.
Ferdinand, Prince of Asturias
Ferdinand of Austria, Infante of Spain, Prince of Asturias( 4 December 1571 in Madrid – 18 October 1578 in Madrid), second son of Philip II of Spain and his fourth wife Anna of Austria( the latter's eldest).
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.
Anna of Austria, Queen of Spain
Anna of Austria (2 November 1549 – 26 October 1580) was Queen of Spain by marriage to her uncle, King Philip II of Spain.

Question: Who is Anna Of Austria, Queen Of Spain's mother-in-law?
Answer: Isabella of Portugal