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.
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.
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.
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.
Waldemar II, Prince of Anhalt-Zerbst
Waldemar II, Prince of Anhalt- Zerbst( died bef. 24 August 1371) was a German prince of the House of Ascania and ruler of the Principality of Anhalt- Zerbst.
He was the eldest child and only son of Waldemar I, Prince of Anhalt- Zerbst by his first wife Elisabeth, daughter of Rudolf I, Elector of Saxony and Duke of Saxe- Wittemberg.
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 Augustus, Prince of Anhalt-Zerbst
John Augustus, Prince of Anhalt- Zerbst( 29 July 1677 in Zerbst – 7 November 1742 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 Karl William, Prince of Anhalt- Zerbst, by his wife Sophie, daughter of August, Duke of Saxe- Weissenfels.
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.
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.
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.

Question: Who is the paternal grandfather of Waldemar Iii, Prince Of Anhalt-Zerbst?
Answer: Albert II, Prince of Anhalt-Zerbst