Philip, Prince of Anhalt-Köthen
Philip, Prince of Anhalt-Köthen (31 May 1468 – 13 November 1500) was a German prince of the House of Ascania and ruler of the principality of Anhalt-Köthen.
He was the only son of Albert VI, Prince of Anhalt-Köthen, by his wife Elisabeth, daughter of Günther II, Count of Mansfeld.
Augustus Louis, Prince of Anhalt-Köthen
Augustus Louis of Anhalt- Köthen( 9 June 1697 in Köthen – 6 August 1755 in Köthen), was a German prince of the House of Ascania and ruler of the principality of Anhalt- Köthen.
He was the third( second surviving) son of Emmanuel Lebrecht, Prince of Anhalt- Köthen, by his wife Gisela Agnes of Rath.
Leopold, Prince of Anhalt-Köthen
Leopold of Anhalt-Köthen (29 November 1694 – 19 November 1728) was a German prince of the House of Ascania and ruler of the principality of Anhalt-Köthen.
Today, he is best remembered for employing Johann Sebastian Bach as his Kapellmeister between 1717 and 1723.
He was born at Köthen, the second (but eldest surviving) son of Emmanuel Lebrecht, Prince of Anhalt-Köthen, by his wife Gisela Agnes of Rath.
Albert VI, Prince of Anhalt-Köthen
Albert VI, Prince of Anhalt- Köthen( died 9 January 1475) was a German prince of the House of Ascania and ruler of the principality of Anhalt- Köthen.
He was the youngest son of Albert IV, Prince of Anhalt- Köthen, but the eldest child of his second wife Elisabeth, daughter of Gebhard XI, Count of Querfurt.
Waldemar V, Prince of Anhalt-Köthen
Waldemar V, Prince of Anhalt- Köthen( died 1436) was a German prince of the House of Ascania and ruler of the principality of Anhalt- Köthen.
He was the second son of Albert IV, Prince of Anhalt- Köthen, by his first wife Elisabeth, daughter of Gebhard III, Count of Mansfeld.
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.
Adolph I, Prince of Anhalt-Köthen
Adolph I, Prince of Anhalt- Köthen( died Zerbst, 28 August 1473), was a German prince of the House of Ascania and ruler of the principality of Anhalt- Köthen.
He was the eldest son of Albert IV, Prince of Anhalt- Köthen, by his first wife Elisabeth, daughter of Gebhard III, Count of Mansfeld.
Charlotte of Nassau-Schaumburg
Charlotte of Nassau- Dillenburg- Schaumburg of Anhalt- Bernburg- Hoym( 1672 – 1700) was the wife of Lebrecht, Prince of Anhalt- Zeitz- Hoym, a German prince of the House of Ascania.
Augustus Christian Frederick, Duke of Anhalt-Köthen
Augustus Christian Frederick of Anhalt-Köthen (Köthen, 18 November 1769 – Schloss Geuz, 5 May 1812), was a German prince of the House of Ascania, ruler of the principality of Anhalt-Köthen, and from 1806 the first "Duke of Anhalt-Köthen."
He was the eldest son of Karl George Lebrecht, Prince of Anhalt-Köthen, by his wife Louise Charlotte, daughter of Frederick, Duke of Schleswig-Holstein-Sonderburg-Glücksburg.
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.

Question: Who is Lebrecht, Prince Of Anhalt-Köthen's paternal grandfather?
Answer: Joachim Ernest, Prince of Anhalt