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.
Drogo of Champagne
Drogo (c.675 – 708) was a Frankish nobleman, the eldest son of Pippin of Heristal and Plectrudis.
He was the duke of Champagne from the early 690s.
Drogo was born shortly after his parents' marriage, which probably took place in 675 or just after.
In the early 680s, Pippin arranged the marriage of Drogo with Anstrudis (or Adaltrudis), the daughter of Waratto, the mayor of the palace in Neustria, and his wife Ansfledis.
The marriage took place toward the end of the decade or in the early 690s.
Drogo and Anstrudis had four sons: Arnulf, who succeeded him as duke of Champagne; Hugh, who entered the church and rose to become an archbishop; Gotfrid; and Pippin;
The marriage of Drogo and Anstrudis increased his father Pippin's influence in Neustria.
Waratto's family properties were located mainly in the vicinity of Rouen.
Drogo, however, was made duke in Champagne, a frontier region between Neustria and Austrasia.
His power in Champagne was enhanced through his control of the monastery of Montier-en-Der and possibly the monastery of Hautvillers.
The "Liber Historiae Francorum", a history of the Franks written in Neustria in 727, portrays the Austrasian Drogo as sympathetic to the Neustrians because of his marital connections.
He did, however, fall foul of the abbey of Saint-Denis, which sued him in the king's court in a property dispute.
King Childebert III ruled in Saint-Denis's favour.
Drogo also lost a lawsuit over the villa of Noisy-sur-Oise with the monastery of Tussonval in 697.
Drogo predeceased his father, dying in 707, according to the "Gesta abbatum Fontanellensium", or in 708, according to most of the annals.
He was buried in the church of Saint Arnulf at Metz, to which his four sons made a grant of land in his honour in June 715.
The "Annales Mettenses" record that Grimoald succeeded Drogo in all his offices, but in fact his son Arnulf succeeded him as duke.
The death of Drogo was perceived by later generations as a pivotal event in the history of the Carolingian dynasty.
Several of the imperial annals written in the late eighth century begin their year-by-year accounts with 708.
These include the "Annales AlamanniciAnnales Nazariani" and "Annales Laureshamenses".
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
Kaoru Hatoyama
After the elections of 2009, she became more widely known as the grandmother of Prime Minister Yukio Hatoyama and his politician brother Kunio Hatoyama.
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.
Mona Hopton Bell
Mona Hopton Bell( 1867- 1940) was a British artist, best known for her portraits of civic figures.
She was the grandmother of the painter Jean H. Bell.
Plectrude
Plectrude  (died 718) was the consort of Pepin of Herstal, the mayor of the palace and duke of the Franks, from about 670.
She was the daughter of Hugobert, seneschal of Clovis IV, and Irmina of Oeren.
She was the regent of Neustria during the minority of her grandson Theudoald from 714 until 718.
Hugh of Champagne
Saint Hugh, Hugh of Champagne, or St Hugh of Rouen( died 730), was the grandson of Pepin of Heristal and Plectrude through their son, Drogo of Champagne, and his wife Anstrude, herself the daughter of Waratton and Ansflede.
Both Waratton and Drogo were mayors of the palaces.
Scholastique of Champagne
Scholastique of Champagne( 1172–1219) was the daughter of Marie, Countess of Champagne and Henry I, Count of Champagne.
Anne Denman
Anne Denman( 1587–1661) was born in Olde Hall, Retford, Nottinghamshire.
Through a fortunate second marriage with Thomas Aylesbury, she became the grandmother of Lady Anne Hyde, Duchess of York and great- grandmother of Queen Mary II and Queen Anne.

Question: Who is Drogo Of Champagne's maternal grandmother?
Answer: Irmina of Oeren