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 Dorothea of Simmern
Countess Palatine Dorothea of Simmern (6 January 1581 – 18 September 1631) was a Countess Palatine of Simmern by birth and Princess of Anhalt-Dessau by marriage.
Countess Palatine Dorothea Catherine of Birkenfeld-Bischweiler
Countess Palatine Dorothea Catherine of Birkenfeld-Bischweiler (3 July 1634 – 7 December 1715) was a Countess Palatine of Zweibrücken-Birkenfeld-Bischweiler by birth and, by marriage, Countess of Nassau-Ottweiler.
John, Count Palatine of Neumarkt
John (Johann von Pfalz-Neumarkt; 1383 – 14 March 1443) was the Count Palatine of Neumarkt from 1410 to his death.
The son of Rupert III of the Palatinate, he married Catherine of Pomerania in 1407.
He is mainly known for his crushing victory against the Hussites at the Battle of Hiltersried in 1433.
Catherine of Pomerania, Countess Palatine of Neumarkt
Catherine of Pomerania
(German: "
Katharina von Pommern"; c. 1390 - 4 March 1426), was a Pomeranian princess and Countess Palatine of Neumarkt.
She was the wife of John, Count Palatine of Neumarkt and the mother of Christopher of Bavaria, who would rule over Denmark, Sweden, and Norway as king of the Kalmar Union.
Countess Palatine Anna Magdalena of Birkenfeld-Bischweiler
Countess Palatine Anna Magdalena of Birkenfeld- Bischweiler( 14 February 1640, Strasbourg – 12 December 1693, Babenhausen) was a daughter of Christian I, Count Palatine of Birkenfeld- Bischweiler( 1598 – 1654) and his first wife, Countess Palatine Magdalene Catherine of Zweibrücken( 1606 – 1648).
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.
Countess Palatine Barbara of Zweibrücken-Neuburg
Countess Palatine Barbara of Zweibrücken-Neuburg (27 July 1559 – 5 March 1618) was a Countess Palatine of Zweibrücken by birth and by marriage Countess of Oettingen-Oettingen.
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 Catherine Of Pomerania, Countess Palatine Of Neumarkt's father-in-law?
Answer: Rupert