Question: Who is Anna Maria Of Brandenburg-Ansbach's maternal grandmother?

Knowledge 1: Anna Maria of Brandenburg-Ansbach
Anna Maria of Brandenburg-Ansbach (28 December 1526 – 20 May 1589) was a German princess of Brandenburg-Ansbach.Anna Maria was born at Jägerndorf, the eldest daughter of George, Margrave of Brandenburg-Ansbach and his second wife Hedwig of Münsterberg-Oels, daughter of Charles I of Münsterberg-Oels.Anna Maria was brought up as a Lutheran and on 24 February 1544 became the wife of Christoph, Duke of Württemberg.She later acted as guardian to her son Ludwig III, Duke of Württemberg early in his reign.After the death of her husband Christoph she lived more than 20 years in the Nürtingen castle, she died in Nürtingen.After losing both her husband and her eldest son in 1568, Anna Maria fell madly in love with the young Landgrave George I of Hesse-Darmstadt (1547–1596).Soon afterwards she became mentally confused and was locked up.George I later married her daughter Eleonore.She died in 1589 and was buried in the St. George's Collegiate Church in Tübingen. [SEP] Knowledge 2: Hedwig of Münsterberg-Oels
Hedwig of Munsterberg-Oels (10/12 June 1508, Oleśnica – 28 November 1531, Legnica) was born Duchess of Münsterberg and Oleśnica and Countess of Kladsko and by marriage Margravine of Brandenburg-Ansbach-Kulmbach.Hedwig was a daughter of Duke Charles I of Münsterberg-Oels, who was a grandson of the King George of Bohemia.Her mother was Anna of Sagan, a daughter of John II, the last Duke of Żagań (Sagan).On 9 January 1525 Hedwig married Margrave George of Brandenburg-Ansbach-Kulmbach.She was George's second wife.The marriage produced two daughters:Hedwig died in Legnica (Liegnitz), where she was buried.
Knowledge 1: Anna Maria of Brandenburg-Ansbach
Anna Maria of Brandenburg-Ansbach (28 December 1526 – 20 May 1589) was a German princess of Brandenburg-Ansbach.Anna Maria was born at Jägerndorf, the eldest daughter of George, Margrave of Brandenburg-Ansbach and his second wife Hedwig of Münsterberg-Oels, daughter of Charles I of Münsterberg-Oels.Anna Maria was brought up as a Lutheran and on 24 February 1544 became the wife of Christoph, Duke of Württemberg.She later acted as guardian to her son Ludwig III, Duke of Württemberg early in his reign.After the death of her husband Christoph she lived more than 20 years in the Nürtingen castle, she died in Nürtingen.After losing both her husband and her eldest son in 1568, Anna Maria fell madly in love with the young Landgrave George I of Hesse-Darmstadt (1547–1596).Soon afterwards she became mentally confused and was locked up.George I later married her daughter Eleonore.She died in 1589 and was buried in the St. George's Collegiate Church in Tübingen. [SEP] Knowledge 2: George, Margrave of Brandenburg-Ansbach
George of Brandenburg- Ansbach( 4 March 1484 – 27 December 1543), known as George the Pious, was a Margrave of Brandenburg- Ansbach from the House of Hohenzollern.
Knowledge 1: Anna Maria of Brandenburg-Ansbach
Anna Maria of Brandenburg-Ansbach (28 December 1526 – 20 May 1589) was a German princess of Brandenburg-Ansbach.Anna Maria was born at Jägerndorf, the eldest daughter of George, Margrave of Brandenburg-Ansbach and his second wife Hedwig of Münsterberg-Oels, daughter of Charles I of Münsterberg-Oels.Anna Maria was brought up as a Lutheran and on 24 February 1544 became the wife of Christoph, Duke of Württemberg.She later acted as guardian to her son Ludwig III, Duke of Württemberg early in his reign.After the death of her husband Christoph she lived more than 20 years in the Nürtingen castle, she died in Nürtingen.After losing both her husband and her eldest son in 1568, Anna Maria fell madly in love with the young Landgrave George I of Hesse-Darmstadt (1547–1596).Soon afterwards she became mentally confused and was locked up.George I later married her daughter Eleonore.She died in 1589 and was buried in the St. George's Collegiate Church in Tübingen. [SEP] Knowledge 2: Sabina of Brandenburg-Ansbach
Sabina of Brandenburg-Ansbach (12 May 1529 – 2 November 1575) was a princess of Brandenburg-Ansbach and Electress of Brandenburg by marriage.

Answer: Anna of Sagan