Question: Who is the maternal grandmother of Countess Ferdinande Henriette Of Stolberg-Gedern?

Knowledge 1: Countess Ferdinande Henriette of Stolberg-Gedern
Countess Ferdinande Henriette of Stolberg-Gedern, born 2 October 1699 at Gedern, Oberhessen, Hesse-Darmstadt, then in the Holy Roman Empire, was a daughter of Louis Christian, Count of Stolberg-Gedern, and Duchess Christine of Mecklenburg-Güstrow.She died at König, Starkenburg, Hesse-Darmstadt, on 31 January 1750, at age 50.Through her daughter Karoline she is a direct female line ancestor of Queen Victoria of the United Kingdom, King Michael of Romania, the last King of that country, King Felipe VI of Spain as well as of Carl XVI Gustaf of Sweden. [SEP] Knowledge 2: Christine of Mecklenburg-Güstrow
Christine of Mecklenburg-Güstrow (14 August 1663 – 3 August 1749) was a German noblewoman of the House of Mecklenburg and by marriage Countess of Stolberg-Gedern.Born in Güstrow, she was the sixth of eleven children born from the marriage of Gustav Adolph, Duke of Mecklenburg-Güstrow and Magdalene Sibylle of Holstein-Gottorp.From her ten older and younger siblings, eight survived to adulthood:Marie (by marriage Duchess of Mecklenburg-Strelitz), Magdalene, Sophie (by marriage Duchess of Württemberg-Oels), Charles, Hereditary Prince of Mecklenburg-Güstrow, Hedwig (by marriage Duchess of Saxe-Merseburg-Zörbig), Louise (by marriage Queen of Denmark and Norway), Elisabeth (by marriage Duchess of Saxe-Merseburg-Spremberg) and Augusta.She was the three-times great-grandmother of Queen Victoria of the United Kingdom.
Knowledge 1: Countess Ferdinande Henriette of Stolberg-Gedern
Countess Ferdinande Henriette of Stolberg-Gedern, born 2 October 1699 at Gedern, Oberhessen, Hesse-Darmstadt, then in the Holy Roman Empire, was a daughter of Louis Christian, Count of Stolberg-Gedern, and Duchess Christine of Mecklenburg-Güstrow.She died at König, Starkenburg, Hesse-Darmstadt, on 31 January 1750, at age 50.Through her daughter Karoline she is a direct female line ancestor of Queen Victoria of the United Kingdom, King Michael of Romania, the last King of that country, King Felipe VI of Spain as well as of Carl XVI Gustaf of Sweden. [SEP] Knowledge 2: Hubba bint Hulail
Hubba bint Hulail was the grandmother of Hashim ibn' Abd Manaf, thus the great- great- great- grandmother of the Islamic" Nabī"( Prophet) Muhammad ibn Abdullah.
Knowledge 1: Countess Ferdinande Henriette of Stolberg-Gedern
Countess Ferdinande Henriette of Stolberg-Gedern, born 2 October 1699 at Gedern, Oberhessen, Hesse-Darmstadt, then in the Holy Roman Empire, was a daughter of Louis Christian, Count of Stolberg-Gedern, and Duchess Christine of Mecklenburg-Güstrow.She died at König, Starkenburg, Hesse-Darmstadt, on 31 January 1750, at age 50.Through her daughter Karoline she is a direct female line ancestor of Queen Victoria of the United Kingdom, King Michael of Romania, the last King of that country, King Felipe VI of Spain as well as of Carl XVI Gustaf of Sweden. [SEP] Knowledge 2: Tjuyu
Tjuyu( sometimes transliterated as Thuya or Thuyu) was an Egyptian noblewoman and the mother of queen Tiye, and the wife of Yuya.She is the grandmother of Akhenaten, and great grandmother of Tutankhamun.

Answer: Magdalene Sibylle of Holstein-Gottorp