Thomas Butler, Viscount Thurles
Thomas Butler, Viscount Thurles (before 1596 – 15 December 1619) was the son and heir apparent of Walter Butler, 11th Earl of Ormond (1559 – 1632/3) (whom he predeceased) and Helen Butler.
He resided at Thurles Castle, Thurles, County Tipperary.
He was the father of the noted Anglo-Irish statesman and Royalist commander James Butler, 1st Duke of Ormonde.
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.
Edmund Butler, 2nd Baron Cahir
Edmond Butler, 2nd Baron Cahir( died 1560) was the son of Thomas Butler, 1st Baron Cahir and the grandson of Thomas Butler of Cahir.
The title became extinct upon his death but was revived in favour of his first cousin, Theobald Butler, 1st Baron Cahir( of the second creation).
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.
Richard Butler of Kilcash
Richard Butler of Kilcash( 1615–1701) was the third son of Thomas Butler, Viscount Thurles and brother of James, 1st Duke of Ormonde.
Richard's descendants would take over the earldom of Ormond following the failure in 1658 of the senior branch of the family.
Anne Hankford
Anne Hankford( c. 1431 – 13 November 1485) was the first wife of Thomas Butler, 7th Earl of Ormond( c. 1426- 3 August 1515).
She was the great- grandmother of Anne Boleyn
Helen Butler
Helen Butler (died 28 January 1631), also known as the Honorable Helen Butler, was the daughter of Edmund Butler, 2nd Viscount Mountgarret and Grizel FitzPatrick.
She married her second cousin Walter Butler, 11th Earl of Ormond.
Their common great-grandfather was Piers Butler, 8th Earl of Ormond.
She had three sons and nine daughters:
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.
Lady Margaret Butler
Lady Margaret Butler, Lady Boleyn( c. 1454 – 1539) was an Irish noblewoman, the daughter and co-heiress of Thomas Butler, 7th Earl of Ormond.
She married Sir William Boleyn and through her eldest son Sir Thomas Boleyn, was the paternal grandmother of Anne Boleyn, second wife of King Henry VIII of England, and great- grandmother of Anne and Henry's daughter, Elizabeth I of England.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.

Question: Who is the maternal grandmother of Thomas Butler, Viscount Thurles?
Answer: Grizel FitzPatrick