Albert, Margrave of Meissen (1934–2012)
Prince Albert Joseph Maria Franz-Xaver of Saxony, Duke of Saxony, Margrave of Meissen (30 November 1934 – 6 October 2012) was the head of the Royal House of Saxony and a German historian.
The fourth child and youngest son of Friedrich Christian, Margrave of Meissen and his wife Princess Elisabeth Helene of Thurn and Taxis, he was the younger brother of Maria Emanuel, Margrave of Meissen, who was his predecessor as head of the Royal House of Saxony.
Albert II, Margrave of Meissen
Albert II, the Degenerate( de:" Albrecht II der Entartete")( 1240 – 20 November 1314) was a Margrave of Meissen, Landgrave of Thuringia and Count Palatine of Saxony.
He was a member of the House of Wettin.
He was the eldest son of Henry III, Margrave of Meissen by his first wife, Constantia of Austria.
Christian Albert, Margrave of Brandenburg-Ansbach
Christian Albert, Margrave of Brandenburg- Ansbach( 18 September 1675 – 16 October 1692) was a German prince.
Dedi I, Margrave of the Saxon Ostmark
Dedi (or Dedo) (1004 – October 1075) was the Margrave of the Saxon Ostmark (also called Lower Lusatia) from 1046 and a claimant for the title of Margrave of Meissen from 1069.
He was the second son of Dietrich II of Wettin and Matilda, daughter of Eckard I of Meissen.
Theodoric I, Margrave of Meissen
Theodoric I( 11 March 1162 – 18 January 1221), called the Oppressed(" Dietrich der Bedrängte"), was the Margrave of Meissen from 1198 until his death.
He was the second son of Otto II, Margrave of Meissen and Hedwig of Brandenburg.
Elisabeth of Meissen
Elisabeth of Meissen, Burgravine of Nuremberg( 22 November 1329 – 21 April 1375) was the daughter of Frederick II, Margrave of Meissen and Mathilde of Bavaria and a member of the House of Wettin.
Agnes of Meissen
Agnes of Meissen( born before 1264 – died after September 1332) was a noblewoman, the daughter of Albert II, Margrave of Meissen and his wife Margaret of Sicily.
Agnes was married with Henry I" the Marvelous" of Brunswick- Grubenhagen, in 1282.
They had 16 children:
Frederick II, Margrave of Meissen
Frederick II, the Serious( 30 November 1310 in Gotha – 18 November 1349 at the Wartburg), Margrave of Meissen, son of Frederick I, Margrave of Meissen and Elisabeth von Lobdeburg- Arnshaugk.
Princess Elisabeth Helene of Thurn and Taxis
Princess Elisabeth Helene of Thurn and Taxis  (15 December 1903, Regensburg, Kingdom of Bavaria – 22 October 1976, Munich, Bavaria, Germany) was a Princess of Thurn and Taxis by birth and a Princess and Duchess of Saxony, Margravine of Meissen, and titular Queen consort of Saxony through her marriage to Friedrich Christian, Margrave of Meissen.
Elisabeth was the sixth child of Albert, 8th Prince of Thurn and Taxis and his wife Archduchess Margarethe Klementine of Austria.
Princess Anna of Saxony (1929–2012)
Princess Maria" Anna" Josepha of Saxony, Duchess of Saxony( Full German name:" Maria Anna Josepha, Prinzessin von Sachsen, Herzogin zu Sachsen"; 13 December 1929 – 13 March 2012) was a Princess of Saxony and member of the House of Wettin by birth and a Princess of Gessaphe and member of the House of Afif- Gessaphe by marriage.
Anna was the third child and second- eldest daughter of Friedrich Christian, Margrave of Meissen and his wife Princess Elisabeth Helene of Thurn and Taxis, and a younger sister of Maria Emanuel, Margrave of Meissen and Albert, Margrave of Meissen, former heads of the Royal House of Saxony and senior claimants to the defunct throne of the Kingdom of Saxony.

Question: When did Albert, Margrave Of Meissen (1934–2012)'s mother die?
Answer: 22 October 1976