Countess Palatine Hedwig Elisabeth of Neuburg
Hedwig Elisabeth of Neuburg (Hedwig Elisabeth Amelia; 18 July 1673 – 10 August 1722) was a Polish princess by marriage to James Louis Sobieski.
She was the daughter of Philip William, Duke of Neuburg, Berg and Jülich, Elector Palatine of Neuburg, and Landgravine Elisabeth Amalie of Hesse-Darmstadt.
She was the grandmother of Charles Edward Stuart, the "Young Pretender".
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.
Countess Palatine Leopoldine Eleonora of Neuburg
Leopoldine Eleonora of Neuburg( Leopoldine Eleonora Josepha; 27 May 1679 – 8 March 1693), was by birth Countess Palatine of Neuburg and member of the House of Wittelsbach.
Born in Neuburg an der Donau, she was the youngest of seventeen children of Philip William, Duke of Neuburg, Berg and Jülich, Elector Palatine of Neuburg and his wife Landgravine Elisabeth Amalie of Hesse- Darmstadt.
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.
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.
Countess Palatine Anna Maria of Neuburg
Countess Palatine Anna Maria of Neuburg( 18 August 1575, Neuburg an der Donau – 11 February 1643, Dornburg) was Countess Palatine of Neuburg and by marriage Duchess of Saxe- Weimar.
James Louis Sobieski
James Louis Sobieski (full name in Polish: "Jakub Ludwik Henryk Sobieski"; 2 November 1667 – 19 December 1737) was a Polish nobleman, politician, diplomat, scholar, traveller and the son of King John III of Poland and Marie Casimire Louise de La Grange d'Arquien.
Elisabeth of Hesse, Countess Palatine of Zweibrücken
Elisabeth of Hesse (4 March 1503 – 4 January 1563, Lauingen) was a Landgravine of Hesse by birth and by marriage Countess Palatine of Zweibrücken and later Countess Palatine of Simmern.
Countess Palatine Magdalene Catherine of Zweibrücken
Magdalena Catherine, Countess Palatine of Zweibrücken( 26 April 1607, Zweibrücken – 20 January 1648, Strasbourg) was a Countess Palatine of Zweibrücken by birth and by marriage Duchess and Countess Palatine of Birkenfeld.
Countess Palatine Maria Franziska of Sulzbach
Countess Palatine Maria Francisca of Sulzbach ("Maria Franziska, Pfalzgräfin von Sulzbach"; 15 June 1724 – 15 November 1794), was a Countess Palatine of Zweibrücken-Birkenfeld by marriage to Frederick Michael, Count Palatine of Zweibrücken-Birkenfeld.
Born in Schwetzingen, she was the fifth child of Joseph Karl, Count Palatine of Sulzbach and Countess Palatine Elizabeth Auguste Sophie of Neuburg.
From her six siblings, only she and two older sisters survive adulthood: Elisabeth Auguste and Maria Anna.

Question: Who is the mother-in-law of Countess Palatine Hedwig Elisabeth Of Neuburg?
Answer: Marie Casimire Louise de La Grange d'Arquien