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.
Prince Louis of Anhalt-Köthen
Louis of Anhalt-Köthen (b. Köthen, 25 September 1778
- d. Köthen, 16 September 1802) was a German prince of the House of Ascania.
He was the third son of Karl George Lebrecht, Prince of Anhalt-Köthen, and his wife Louise Charlotte, daughter of Frederick, Duke of Schleswig-Holstein-Sonderburg-Glücksburg.
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.
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.
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.
William Louis, Prince of Anhalt-Köthen
William Louis of Anhalt- Köthen( 3 August 1638, in Köthen – 13 April 1665, in Köthen), was a German prince of the House of Ascania and ruler of the principality of Anhalt- Köthen.
He was the second son of Louis I, Prince of Anhalt- Köthen, but second- born son of his second wife Sophie, daughter of Simon VI, Count of Lippe.
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.
Gisela Agnes of Anhalt-Köthen
Gisela Agnes of Anhalt- Köthen( 21 September 1722, Köthen – 20 April 1751, Dessau) was a princess of Anhalt- Köthen by birth and by marriage Duchess of Anhalt- Dessau.
Anna Eleonore of Stolberg-Wernigerode
Anna Eleonore of Stolberg- Wernigerode( 26 March 1651- 27 January 1690), was a German regent; Princess of Anhalt- Köthen by marriage to Emmanuel, Prince of Anhalt- Köthen, and regent of Anhalt- Köthen during the minority of her son from 1671 until 1690.
Louis Augustus Karl Frederick Emil, Duke of Anhalt-Köthen
Louis Augustus Karl Frederick Emil, Duke of Anhalt-Köthen (Köthen, 20 September 1802 – Leipzig, 18 December 1818), was a German prince of the House of Ascania and ruler of the duchy of Anhalt-Köthen.
He was the second (but only surviving son) of Prince Louis of Anhalt-Köthen by his wife Princess Louise of Hesse-Darmstadt, daughter of the later (1806)
Louis I, Grand Duke of Hesse and by Rhine.

Question: Who is Louis Augustus Karl Frederick Emil, Duke Of Anhalt-Köthen's paternal grandfather?