Albert II, Prince of Anhalt-Zerbst
Albert II, Prince of Anhalt- Zerbst( died 17 July 1362) was a German prince of the House of Ascania and ruler of the principality of Anhalt- Zerbst.
He was the third son of Albert I, Prince of Anhalt- Zerbst, but the eldest child born to his second wife Agnes, daughter of Conrad, Margrave of Brandenburg- Stendal.
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.
Waldemar III, Prince of Anhalt-Zerbst
Waldemar III, Prince of Anhalt- Zerbst( died 1391) was a German prince of the House of Ascania and ruler of the principality of Anhalt- Zerbst.
He was the youngest son of John II, Prince of Anhalt- Zerbst, by his wife Elisabeth, daughter of John I, Count of Henneberg- Schleusingen.
John VI, Prince of Anhalt-Zerbst
John VI of Anhalt-Zerbst (Zerbst, 24 March 1621 – Zerbst, 4 July 1667), was a German prince of the House of Ascania and ruler of the principality of Anhalt-Zerbst.
He was the only son of Rudolph, Prince of Anhalt-Zerbst, by his second wife Magdalene, daughter of John VII, Count of Oldenburg.
Karl I, Prince of Anhalt-Zerbst
Karl I of Anhalt- Zerbst( 17 November 1534 in Dessau – 4 May 1561 in Zerbst), was a German prince of the House of Ascania and ruler of the principality of Anhalt- Zerbst.
He was the eldest son of John V, Prince of Anhalt- Zerbst, by his wife Margaret, daughter of Joachim I Nestor, Elector of Brandenburg.
Waldemar I, Prince of Anhalt-Zerbst
Waldemar I, Prince of Anhalt- Zerbst( died 7 January 1368) was a German prince of the House of Ascania and ruler of the principality of Anhalt- Zerbst.
He was the youngest son of Albert I, Prince of Anhalt- Zerbst, by his second wife Agnes, daughter of Conrad, Margrave of Brandenburg- Stendal.
John II, Prince of Anhalt-Zerbst
John II, Prince of Anhalt- Zerbst( died 11 April 1382) was a German prince of the House of Ascania and ruler of the principality of Anhalt- Zerbst.
He was the youngest son of Albert II, Prince of Anhalt- Zerbst, by his second wife Beatrix, daughter of Rudolf I, Elector of Saxony and Duke of Saxe- Wittemberg.
Ernest I, Prince of Anhalt-Dessau
Ernest I, Prince of Anhalt-Dessau (died Dessau, 12 June 1516), was a German prince of the House of Ascania and ruler of the principality of Anhalt-Dessau.
He was the second son of George I, Prince of Anhalt-Dessau, yet the first born by his fourth wife Anna, daughter of Albert VIII, Count of Lindow-Ruppin.
Albert III, Prince of Anhalt-Zerbst
Albert III, Prince of Anhalt- Zerbst( died ca. 1 August 1359) was a German prince of the House of Ascania and ruler of the principality of Anhalt- Zerbst.
He was the eldest son of Albert II, Prince of Anhalt- Zerbst, by his second wife Beatrix, daughter of Rudolf I, Elector of Saxony and Duke of Saxe- Wittemberg.
Bernhard VII, Prince of Anhalt-Zerbst
Bernhard VII of Anhalt- Zerbst( 17 March 1540 – 1 March 1570), was a German prince of the House of Ascania and ruler of the principality of Anhalt- Zerbst.
He was born and died in Dessau, and was the third and youngest son of John V, Prince of Anhalt- Zerbst by his wife Margaret, daughter of Joachim I Nestor, Elector of Brandenburg.

Question: Who is John V, Prince Of Anhalt-Zerbst's paternal grandfather?
Answer: George I, Prince of Anhalt-Dessau