Christian I, Prince of Anhalt-Bernburg
Christian I, Prince of Anhalt-Bernburg, also known as Christian of Anhalt, (11 May 1568 – 17 April 1630) was a German prince of the House of Ascania.
He was ruling prince of Anhalt and, from 1603, ruling prince of the revived principality of Anhalt-Bernburg.
From 1595 he was governor of Upper Palatinate, and soon became the advisor-in-chief of Frederick IV, Elector Palatine.
Augustus, Prince of Anhalt-Plötzkau
Augustus of Anhalt-Plötzkau (Dessau, 14 July 1575 – Plötzkau, 22 August 1653), was a German prince of the House of Ascania and ruler of the unified principality of Anhalt.
From 1603, he was ruler of the principality of Anhalt-Plötzkau.
Augustus was the fourth son of Joachim Ernest, Prince of Anhalt, but second-born son of his second wife Eleonore, daughter of Christoph, Duke of Württemberg.
Ernest Gottlieb, Prince of Anhalt-Plötzkau
Ernest Gottlieb of Anhalt-Plötzkau (4 September 1620 – 7 March 1654) was a German prince of the House of Ascania and ruler of the principality of Anhalt-Plötzkau.
He was the eldest son of Augustus, Prince of Anhalt-Plötzkau, by his wife Sibylle, daughter of John George I, Count of Solms-Laubach.
Otto IV, Prince of Anhalt-Bernburg
Otto IV, Prince of Anhalt- Bernburg( died 1 May 1415) was a German prince of the House of Ascania and ruler of the principality of Anhalt- Bernburg.
He was the youngest son of Otto III, Prince of Anhalt- Bernburg, by his unknown first wife.
Lebrecht, Prince of Anhalt-Köthen
Lebrecht of Anhalt- Köthen( Plötzkau, 8 April 1622 – Köthen, 7 November 1669), was a German prince of the House of Ascania and ruler of the principality of Anhalt- Plötzkau.
From 1665, he was ruler of the principality of Anhalt- Köthen.
He was the second son of Augustus, Prince of Anhalt- Plötzkau, by his wife Sibylle, daughter of John George I, Count of Solms- Laubach.
John V, Prince of Anhalt-Zerbst
John V of Anhalt- Zerbst( Dessau, 4 September 1504 – Zerbst, 4 February 1551), was a German prince of the House of Ascania and ruler of the principality of Anhalt- Dessau.
From 1544, he assumed rule of the re-created principality of Anhalt- Zerbst.
John was the second( but eldest surviving) son of Ernest I, Prince of Anhalt- Dessau, by his wife Margarete, daughter of Henry I, Duke of Münsterberg- Oels, and granddaughter of George of Poděbrady, King of Bohemia.
Emmanuel, Prince of Anhalt-Köthen
Emmanuel of Anhalt-Köthen (Plötzkau, 6 October 1631 – Köthen, 8 November 1670), was a German prince of the House of Ascania and ruler of the principality of Anhalt-Plötzkau.
From 1665, he was ruler of the principality of Anhalt-Köthen.
He was the third and youngest son of Augustus, Prince of Anhalt-Plötzkau, by his wife Sibylle, daughter of John George I, Count of Solms-Laubach.
Bernhard III, Prince of Anhalt-Bernburg
Bernhard III, Prince of Anhalt- Bernburg( died 20 August 1348) was a German prince of the House of Ascania and ruler of the principality of Anhalt- Bernburg.
He was the eldest son of Bernhard II, Prince of Anhalt- Bernburg, by his wife Helene, daughter of Wizlaw II, Prince of Rügen.
George III, Prince of Anhalt-Dessau
George III, Prince of Anhalt-Dessau (Dessau, 15 August 1507 – Dessau, 17 October 1553), was a German prince of the House of Ascania and ruler of the principality of Anhalt-Dessau, and also a Protestant Reformer.
After 1544 he became the first ruler of the principality of Anhalt-Plötzkau.
George was the third (but second surviving) son of Ernest I, Prince of Anhalt-Dessau, by his wife Margarete, daughter of Henry I, Duke of Münsterberg-Oels and granddaughter of George of Poděbrady, King of Bohemia.
Albert IV, Prince of Anhalt-Köthen
Albert IV, Prince of Anhalt- Köthen( d. Coswig, 24 November 1423), was a German prince of the House of Ascania and ruler of the principality of Anhalt- Zerbst until 1396, when he became the first ruler of the principality of Anhalt- Köthen.
He was the second son of John II, Prince of Anhalt- Zerbst, by his wife Elisabeth, daughter of John I, Count of Henneberg- Schleusingen.

Question: Who is Ernest Gottlieb, Prince Of Anhalt-Plötzkau's paternal grandfather?