Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
Alethea Howard, Countess of Arundel
Alethea Howard, 14th Baroness Talbot, 17th Baroness Strange of Blackmere, 13th Baroness Furnivall, Countess of Arundel( 1585 –), née Lady Alethea Talbot( pronounced" Al- ee- thia"), was a famous patron and art collector.
She was the wife of Thomas Howard, 21st Earl of Arundel with whom she build one of the most important art collection of the 17th century's England.
She was the youngest daughter of Gilbert Talbot, 7th Earl of Shrewsbury and his wife Mary Cavendish; and the sister of two other countesses:
Mary Herbert, Countess of Pembroke and Elizabeth Grey, Countess of Kent.
Gerald FitzGerald, 11th Earl of Kildare
Gerald FitzGerald, 11th Earl of Kildare( 1525 – 16 November 1585), also known as the" Wizard Earl"( a sobriquet also given to The 9th Earl of Northumberland), was an Irish peer.
He was the son of The 9th Earl of Kildare and his second wife Elizabeth, Countess of Kildare.
Louisa Cavendish-Bentinck
Caroline Louisa Cavendish- Bentinck( née Burnaby; 5 December 1832 – 6 July 1918) was the maternal grandmother of Queen Elizabeth The Queen Mother and the great- grandmother of Elizabeth II.
Elizabeth Grey, Countess of Kent
Elizabeth Grey, Countess of Kent( née Lady Elizabeth Talbot)( 1582 – 7 December 1651) was a medical recipe collector, and the wife of Henry Grey, 8th Earl of Kent.
Mary Grey, Countess Grey
Mary Elizabeth Grey, Countess Grey( 4 March 1776 – 26 November 1861) was a British aristocrat and Countess of Grey as wife of Charles Grey, 2nd Earl Grey, the Prime Minister of the United Kingdom.
Elizabeth Grey, Countess of Kildare
Elizabeth Grey, Countess of Kildare
(c.1497- after 1548), was an English noblewoman, and the second wife of Irish peer Gerald FitzGerald, 9th Earl of Kildare.
Her father was Thomas Grey, 1st Marquess of Dorset.
She went to France in 1514 as one of the Maids of Honour of Mary Tudor, Queen of France, and remained to serve the latter's successor, Queen Claude, in the same capacity.
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.
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.
Thomas Grey, 1st Marquess of Dorset
Thomas Grey, 1st Marquess of Dorset, 1st Earl of Huntingdon, 7th Baron Ferrers of Groby, (145520 September 1501) was an English nobleman, courtier and the eldest son of Elizabeth Woodville and her first husband Sir John Grey of Groby.
Her second marriage to King Edward IV made her Queen of England, thus elevating Grey's status at court and in the realm as the stepson of the King.
Through his mother's assiduous endeavours, he made two materially advantageous marriages to wealthy heiresses, the King's niece Anne Holland and Cecily Bonville, 7th Baroness Harington.
By the latter he had 14 children.

Question: Who is the paternal grandmother of Elizabeth Grey, Countess Of Kildare?