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.
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.
Ebba Eriksdotter Vasa
Ebba Eriksdotter Vasa (circa 1491 – 21 November 1549) was a Swedish noblewoman.
She was the mother of Queen Margaret Leijonhufvud and the second cousin and mother-in-law of King Gustav Vasa.
Elizabeth, Lady Thurles
Elizabeth Poyntz (1587May 1673), daughter of Sir John Pointz (died 1633) of Iron Acton in Gloucestershire and his second wife Elizabeth Sydenham, became Lady Thurles in 1608 when she married Thomas Butler, Viscount Thurles, son of Walter, 11th Earl of Ormond.
Apparently, the marriage was against her father-in-law's wishes.
This may have been less on her account than her father's:
Sir John Pointz was notoriously improvident in matters of finance, and died penniless.
Some sources say that she lived in Thurles Castle from this marriage until her death (1608–1673), except for a short period (1658–1660) during the rule of Cromwell
—she was a Catholic Royalist.
It is not clear, however, that she could have returned to Thurles Castle because Lewis writes that "this castle, during the parliamentary war, was garrisoned for the King, but was afterwards taken by the parliamentarian forces, by whom it was demolished".
On the other hand, Lady Thurles may have returned to a newer building on or close to the site of the castle which may also have been called Thurles Castle; Grose, writing in 1791, and Armitage, writing in 1912, seem to imply that a building called Thurles Castle still existed in their times.
She and Lord Thurles had three sons and four daughters before he drowned on 15 December 1619, when the ship carrying him to England was wrecked off the Skerries near Anglesey.
This was shortly after the start of his father's long imprisonment in the Fleet Prison in London and Thomas had been on his way to answer charges of treason for having garrisoned Kilkenny.
After his death, Lady Thurles married again, about 1620.
With her second husband, Captain George Mathew of Radyr and Llandaff in Glamorganshire, Wales, she had two more sons and one more daughter.
Her second husband died in 1636 at Tenby in Wales.
She lived a further 37 years, dying in Thurles in May 1673.
She was buried beside what is now the Protestant church of St. Mary's in Thurles.
An oil portrait of Lady Thurles is held by Tipperary County Library in Thurles.
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.
Cornelia (mother of the Gracchi)
Cornelia( c. 190s – c. 115 BC) was the second daughter of Publius Cornelius Scipio Africanus, the hero of the Second Punic War, and Aemilia Paulla.
She is remembered as a prototypical example of a virtuous Roman woman.
She was the mother of the Gracchi brothers, and the mother- in- law of Scipio Aemilianus.
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.
Thomas Butler, Viscount Thurles
Thomas Butler, Viscount Thurles (before 1596 – 15 December 1619) was the son and heir apparent of Walter Butler, 11th Earl of Ormond (1559 – 1632/3) (whom he predeceased) and Helen Butler.
He resided at Thurles Castle, Thurles, County Tipperary.
He was the father of the noted Anglo-Irish statesman and Royalist commander James Butler, 1st Duke of Ormonde.

Question: Who is Elizabeth, Lady Thurles's mother-in-law?
Answer: Helen Butler