John I, Count Palatine of Zweibrücken
John I of Zweibrücken (known as the Lame; ; 8 May 1550 – 12 August 1604) was Count Palatine and Duke of Zweibrücken during 1569–1604.
He was born in Meisenheim as the second son of Wolfgang, Count Palatine of Zweibrücken and his wife Anna of Hesse.
In 1588 he changed the state religion from Lutheranism to Calvinism.
He died in Germersheim in 1604 and was buried in the Alexanderkirche in Zweibrücken.
Rudolph II, Count Palatine of Tübingen
Rudolph II, Count Palatine of Tübingen( died 1 November 1247) was Count Palatine of Tübingen and Vogt of Sindelfingen.
He was the younger son of Rudolph I and his wife Matilda of Gleiberg, heiress of Giessen.
Philip William August, Count Palatine of Neuburg
Philip William August, Count Palatine of Neuburg( born 19 November 1668 in Neuburg an der Donau; died: 5 April 1693 in Zákupy) was a Prince and Count Palatine of Neuburg.
John Christian, Count Palatine of Sulzbach
John Christian( 23 January 1700 – 20 July 1733;" in German: Johann Christian Joseph") was the Count Palatine of Sulzbach from 1732 – 33.
He was the second and youngest surviving son of duke Theodore Eustace, Count Palatine of Sulzbach( 1659 – 1732) with his consort Eleonore Maria Amalia of Hesse- Rotenburg( 1675 – 1720).
His elder brother was Joseph Charles, Count Palatine of Sulzbach.
Christina Magdalena of the Palatinate-Zweibrücken
Countess Palatine Christina Magdalena of Kleeburg( 27 May 1616 – 14 August 1662) of the House of Wittelsbach, Margravine of Baden- Durlach.
She was the daughter of John Casimir, Count Palatine of Kleeburg and Princess Catherine of Sweden( a granddaughter of Gustav I of Sweden, making Christina a link between the house of Vasa and the later houses of Holstein- Gottorp and Bernadotte).
Christina Magdalena was a sister of Charles X of Sweden, and grew up in Sweden.
Gustav, Duke of Zweibrücken
Count Palatine Gustav Samuel Leopold of the House of Wittelsbach( 12 April 1670, Stegeborg Castle near Söderköping, Sweden – 17 September 1731, Zweibrücken, Germany) was the Count Palatine of Kleeburg from 1701 until 1731 and the Duke of Zweibrücken from 1718 until 1731.
His titles included: 5th Duke of Stegeborg( in Sweden), Count Palatine of the Rhine, and Duke in Bavaria.
He was the last male member of the Kleeburg line of the House of Wittelsbach to reign.
Catherine of Pfalz-Zweibrücken (1661–1720)
Catherine of Pfalz- Zweibrücken( 10 December 1661 – 27 May 1720), was the daughter of Adolph John I, Count Palatine of Kleeburg and Countess Elsa Elisabeth Brahe of Wisingsborg, cousin of Charles XI of Sweden and the sister of Adolph John II, Count Palatine of Kleeburg and Gustav, Duke of Zweibrücken.
She is foremost known for the scandal involving herself and her siblings, when she, after a long ongoing conflict in 1686- 88, escaped from the authority of her parents.
John Casimir, Count Palatine of Kleeburg
John Casimir, Count Palatine of Zweibrücken-Kleeburg (20 April 1589, Zweibrücken – 18 June 1652, Stegeborg Castle) was the son of John I, Count Palatine of Zweibrücken and his wife, Duchess Magdalene of Jülich-Cleves-Berg and was the founder of a branch of Wittelsbach Counts Palatine often called the "Swedish line", because it gave rise to three subsequent kings of Sweden, but more commonly known as the Kleeburg (or Cleebourg) line.
In 1591 his father stipulated that, as the youngest son, John Casimir would receive as appanage the countship of Neukastell in the Palatinate.
Upon their father's death in 1611, however, the eldest son, John II, Count Palatine of Zweibrucken, instead signed a compromise with John Casimir whereby the latter received only the castle at Neukastell coupled with an annuity of 3000 florins from the countship's revenues (similarly, John Casimir's elder brother, Frederick Casimir, received the castle at Landsberg with a small surrounding domain, instead of the entire Landsberg appanage bequeathed to him paternally).
On 11 June 1615, Casimir married his second cousin Catherine of Sweden, and their son eventually became King Charles X of Sweden.
Maria Elizabeth of Zweibrücken
Maria Elizabeth of Pfalz- Zweibrücken( 16 April 1663 – 23 January 1748), was the daughter of Adolph John I, Count Palatine of Kleeburg and Elsa Elisabeth Brahe af Wisingsborg, cousin of Charles XI of Sweden and the sister of Adolph John II, Count Palatine of Kleeburg and Gustav, Duke of Zweibrücken.
She is foremost known for the scandal involving herself and her siblings, when she, after a long going conflict in 1686- 88, eloped from the authority of her parents.
John Casimir of the Palatinate-Simmern
John Casimir, Count Palatine of Simmern( German:" Johann Casimir von Pfalz- Simmern")
( 7 March 1543 –) was a German prince and a younger son of Frederick III, Elector Palatine.
A firm Calvinist, he was a leader of mercenary troops in the religious wars of the time, including the Dutch Revolt.
From 1583 – 1592 he acted as regent for his nephew, Elector Palatine Frederick IV.

Question: Who is John Casimir, Count Palatine Of Kleeburg's paternal grandfather?