Countess Louise Sophie of Danneskiold-Samsøe
Countess Louise Sophie af Danneskiold- Samsøe( 22 September 1796 – 11 March 1867) was a member of a Danish noble family descended illegitimately from Christian V of Denmark and the wife of Christian August II, Duke of Schleswig- Holstein- Sonderburg- Augustenburg.
She was the grandmother of German Empress Auguste Victoria, wife of the last German Emperor Wilhelm II.
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.
Louis II of Anjou
Louis II( 5 October 1377 – 29 April 1417) was Duke of Anjou and Count of Provence from 1384 to 1417; he claimed the Kingdom of Naples, but only ruled parts of the kingdom from 1390 to 1399.
His father, Louis I of Anjouthe founder of the House of Valois- Anjouwas a younger son of King John II of France and the adopted son of Queen Joanna I of Naples.
When his father died during a military campaign in Naples in 1384, Louis II was still a child.
He inherited Anjou from his father, but his mother, Marie of Blois, could not convince his uncles, John, Duke of Berry and Philip II, Duke of Burgundy, to continue her husband's war for Naples.
The Provençal nobles and towns refused to acknowledge Louis II as their lawful ruler, but Marie of Blois persuaded them one after another to swear fealty to him between 1385 and 1387.
His cousin, King Charles VI of France decided to support Louis II's bid for Naples in 1389.
After Antipope Clement VII crowned him king in Avignon on 1 November 1389, Louis II moved to Naples.
His troops could not occupy the whole kingdom, thus it was practically divided between Louis II and his opponent, Ladislaus of Naples.
The conflict between Clement VII's successor, Antipope Benedict XIII, and France weakened Louis' position and Ladislaus forced him to leave Naples for Provence in 1399.
Agnes of the Palatinate
Agnes of the Palatinate (1201–1267) was a daughter of Henry V, Count Palatine of the Rhine and his first wife Agnes of Hohenstaufen, daughter of Conrad, Count Palatine of the Rhine.
Agnes was Duchess of Bavaria by her marriage to Otto II Wittelsbach, Duke of Bavaria.
Louis II, Duke of Bavaria
Ludwig I or Louis I of Upper Bavaria  (13 April 1229 – 2 February 1294) was Duke of Upper Bavaria and Count Palatine of the Rhine from 1253.
He is known as Ludwig II or Louis II as Duke of Bavaria, and also as Louis the Strict.
Born in Heidelberg, he was a son of duke Otto II and Agnes of the Palatinate.
She was a daughter of the Welf Henry V, Count Palatine of the Rhine, her grandfathers were Henry XII the Lion and Conrad of Hohenstaufen.
Maria of Brabant, Duchess of Bavaria
Maria of Brabant( 1226–1256) was a daughter of Henry II, Duke of Brabant, and Maria of Swabia.
She married Louis II, Duke of Bavaria, being the first of three wives.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
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.
Charles II, Duke of Bourbon
Charles II, Duke of Bourbon( Château de Moulins, 1434 – September 13, 1488, Lyon), was Archbishop of Lyon from an early age and a French diplomat under the rule of Louis XI of France.
He had a 2- week tenure as Duke of Bourbon in 1488, being ousted afterward by his younger brother and successor, Peter II, Duke of Bourbon.
William VII of Chalon-Arlay
William VII of Chalon( died 1475) was a prince of Orange and lord of Arlay.
He was the son of Louis II lord of Arlay and his wife Johanna of Montfaucon.
He was married to Catherine of Brittany, the sister of Francis II, Duke of Brittany.
Together, they had one son:

Question: Who is the maternal grandmother of Louis Ii, Duke Of Bavaria?
Answer: Agnes of Hohenstaufen