William II, Landgrave of Hesse-Wanfried-Rheinfels
William II, Landgrave of Hesse- Wanfried- Rheinfels( also known as" William the Younger"; born: 25 August 1671 in Langenschwalbach; died: 1 April 1731 in Paris, and also buried there) was a son of the Landgrave Charles of Hesse- Wanfried( 1649 – 1711) and his first wife, Sophie Magdalene of Salm- Reifferscheid( d. 1675).
He succeeded his father as Landgrave of Hesse- Wanfried and Hesse- Rheinfels.
After 1711, he styled himself" Landgrave of Hesse- Rheinfels".
Adelaide of Hesse
Adelaide of Hesse( after 1323 – after May 26, 1371) was a daughter of Henry II, Landgrave of Hesse, and his wife Elisabeth of Thuringia, daughter of Frederick I, margrave of Meissen.
Adelaide was a member of the House of Hesse.
Hermann I, Landgrave of Thuringia
Hermann I( died 25 April 1217), Landgrave of Thuringia and( as Hermann III) Count Palatine of Saxony, was the second son of Louis II, Landgrave of Thuringia(" the Iron"), and Judith of Hohenstaufen, the sister of Emperor Frederick Barbarossa.
Elizabeth of Hungary
Elizabeth of Hungary (7 July 1207 – 17 November 1231), also known as Saint Elizabeth of Thuringia or Saint Elisabeth of Thuringia, was a princess of the Kingdom of Hungary, Landgravine of Thuringia, Germany, and a greatly venerated Catholic saint who was an early member of the Third Order of St. Francis, by which she is honored as its patroness.
Elizabeth was married at the age of 14, and widowed at 20.
After her husband's death she sent her children away and regained her dowry, using the money to build a hospital where she herself served the sick.
She became a symbol of Christian charity after her death at the age of 24 and was canonized on 25 May 1235.
Henry Raspe, Landgrave of Thuringia
Henry Raspe( 1204 – 16 February 1247) succeeded his nephew Hermann II as Landgrave of Thuringia in central Germany in 1241; he later was elected anti-king in 1246 – 1247 in opposition to Conrad IV of Germany.
Louis I, Landgrave of Hesse
Louis I of Hesse( 6 February 1402, Spangenberg- 17 January 1458), called" the Peaceful" was Landgrave of Lower Hesse( Hesse) from 1413- 1458.
He was the son of Hermann II, Landgrave of Hesse and Margaret, the daughter of Frederick V of Nuremberg.
He married Anna( 5 June 1420- 17 September 1462) daughter of Frederick I, Elector of Saxony on 13 September 1436.
Their children were: After 1425 a conflict with the Electorate of Mainz over claims to power in Hesse broke out into open conflict and Archbishop Conrad III of Mainz suffered a decisive defeat at Fulda in 1427.
Louis II, Landgrave of Thuringia
Ludwig II, Landgrave of Thuringia, nicknamed" Louis the Iron"( 1128 – 14 October 1172 at Neuenburg Castle in Freyburg).
Louis III, Landgrave of Thuringia
Louis III, Landgrave of Thuringia, nicknamed" Louis the Pious" or" Louis the Mild"( 1151/52 – 16 October 1190, in the eastern Mediterranean Sea, near Cyprus) was a German nobleman.
He was a member of the Ludowingians dynasty and was the ruling Landgrave of Thuringia from 1172 until his death.
William I, Elector of Hesse
William I, Elector of Hesse( 3 June 1743 – 27 February 1821) was the eldest surviving son of Frederick II, Landgrave of Hesse- Kassel( or Hesse- Cassel) and Princess Mary of Great Britain, the daughter of George II.
Hermann II, Landgrave of Thuringia
Hermann II (28 March 1222 in Creuzburg – 3 January 1241) was the Landgrave of Thuringia and the son of Louis IV, Landgrave of Thuringia, and Saint Elizabeth of Hungary.

Question: What is the date of death of Hermann Ii, Landgrave Of Thuringia's mother?
Answer: 17 November 1231