Philip Joseph, Prince of Salm-Kyrburg
Philip Joseph, Prince of Salm- Kyrburg( 1709 – 1779) was the first prince of Salm- Kyrburg, from 1743 to 1779.
Francis II, Duke of Lorraine
Francis II (François de Lorraine; 27 February 1572 – 14 October 1632) was the son of Charles III, Duke of Lorraine and Claude of Valois.
He was Duke of Lorraine briefly in 1625, quickly abdicating in favour of his son.
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.
Christina of Salm
Countess Christina of Salm (1575–1627), was a duchess consort of Lorraine; married in 1597 to Francis II, Duke of Lorraine.
Hermann of Salm
Herman( n) of Salm( – 28 September 1088), also known as Herman( n) of Luxembourg, the progenitor of the House of Salm, was Count of Salm and elected German anti-king from 1081 until his death.
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.
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.
Charles Theodore, Prince of Salm
Charles Theodore Otto, Prince of Salm( 1645- 1710), was Count of Salm- Salm since 1663 and Obersthofmeister at the Austrian Court.
John Philip II, Wild- and Rhinegrave of Salm-Dhaun
John Philip II of Salm-Dhaun (28 October 1645 – 26 June 1693) was Rhinegrave of Salm-Dhaun from 1673 until his death.
He was the son of Count John Louis of Salm-Dhaun and his wife, Elisabeth of Salm-Neufville.
He married Anna Catherine, the daughter of John Louis, Count of Nassau-Ottweiler and Countess Palatine Dorothea Catherine of Birkenfeld-Bischweiler.
They had seven children:
John Philip II was born and died in Hochstetten-Dhaun.
Louis Otto, Prince of Salm
Louis Otto, Prince of Salm( 24 October 1674 – 23 November 1738) was the Count of Salm- Salm from 1710, the only son of the Imperial chamberlain(" Reichskämmerer")
Charles Theodore, Prince of Salm( 1645 – 1710) and Countess Palatine Luise Maria of Simmern( 1647- 1679).

Question: Who is the mother-in-law of Christina Of Salm?