Anna de' Medici, Archduchess of Austria
Anna de' Medici (21 July 1616 – 11 September 1676) was a daughter of Cosimo II de' Medici, Grand Duke of Tuscany and his wife Maria Maddalena of Austria.
A patron of the arts, she married Ferdinand Charles, Archduke of Further Austria in 1646.
They were the parents of Claudia Felicitas of Austria, Holy Roman Empress.
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.
Nannina de' Medici
Nannina de' Medici( 14 February 1448 – 14 May 1493), born Lucrezia de' Medici, was the second daughter of Piero di Cosimo de' Medici and Lucrezia Tornabuoni.
She was thus the elder sister of Lorenzo de' Medici.
She married Bernardo Rucellai.
Her father's name was Piero, so she is sometimes known as Lucrezia di Piero de' Medici.
Cosimo II de' Medici, Grand Duke of Tuscany
Cosimo II de' Medici (12 May 1590 – 28 February 1621) was Grand Duke of Tuscany from 1609 until his death.
He was the elder son of Ferdinando
I de' Medici, Grand Duke of Tuscany, and Christina of Lorraine.
For the majority of his twelve-year reign, he delegated the administration of Tuscany to his ministers.
He is best remembered as the patron of Galileo Galilei, his childhood tutor.
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.
Infanta Maria Theresa of Portugal
Infanta Maria
Theresa of Portugal( 24 August 1855 – 12 February 1944) was a Princess of the House of Braganza.
She became by marriage an Archduchess of Austria and also sister- in- law of Emperors Franz Joseph I of Austria and Maximilian I of Mexico, as well as step- grandmother of Emperor Charles I of Austria.
Anna de' Medici
Anna de' Medici( 31 December
1569 – 19 February 1584) was the third child of Francesco I de' Medici, Grand Duke of Tuscany, and Joanna of Austria.
She was a member of the famous House of Medici.
Giovanni di Bicci de' Medici
Giovanni di Bicci de' Medici( c. 1360 – February 1429) was an Italian banker and founder of the Medici Bank.
While other members of the Medici family, such as Chiarissimo di Giambuono de' Medici, who served in the Signoria of Florence in 1201, and Salvestro de' Medici, who was implicated in the Ciompi Revolt of 1378, are of historical interest, it was Giovanni's founding of the family bank that truly initiated the family's rise to power in Florence.
He was the father of Cosimo de' Medici and Lorenzo de' Medici, and an ancestor of other notable Medici rulers.
For example, he was the grandfather of Piero di Cosimo de' Medici; the great- grandfather of Lorenzo de' Medici( the Magnificent); and the great- great- great- grandfather of Cosimo I de' Medici, Grand Duke of Tuscany.
Archduchess Margaret of Austria (nun)
Margaret of Austria( 1536 – 1567) was an Archduchess of Austria.
Archduchess Agnes Christina of Austria
Archduchess Agnes Christina of Austria( 14 December 1928 – 31 August 2007) was a member of the Tuscan line of the House of Habsburg and an Archduchess of Austria and a Princess of Tuscany by birth.
She was the great- granddaughter of Emperor Franz Joseph of Austria- Hungary.

Question: Who is Anna De' Medici, Archduchess Of Austria's paternal grandmother?
Answer: Christina of Lorraine