Blanche of Lancaster
Blanche of Lancaster (25 March 1342 – 12 September 1368) was a member of the English royal House of Plantagenet and the daughter of the kingdom's wealthiest and most powerful peer, Henry of Grosmont, 1st Duke of Lancaster.
She was the first wife of John of Gaunt, the mother of King Henry IV, and the grandmother of King Henry V of England.
Isabella of Ibelin, Queen of Cyprus and Jerusalem
Isabella of Ibelin( 1241–1324), was Queen of Cyprus and Jerusalem by marriage to Hugh III of Cyprus.
She was the daughter of Guy d' Ibelin, marshal and constable of the Kingdom of Cyprus, and of Philippa Berlais.
She married Hugh III of Cyprus( 1235 – 1284), the King of Cyprus( reign 1267 – 1284).
Henry I of Cyprus
Henry I of Cyprus, nicknamed the Fat (3 May 1217 – 18 January 1253 at Nicosia) was King of Cyprus from 1218 to 1253.
He was the son of Hugh I of Cyprus and Alice of Champagne.
When his father Hugh I died on January 10, 1218, the 8-month-old Henry became king.
His mother was the official regent, but handed off the actual governing to her uncle, Philip of Ibelin.
When Philip died, the effective regency passed to his brother, John of Ibelin, the Old Lord of Beirut.
Catherine Cornaro
Catherine Cornaro( 25 November 1454 – 10 July 1510) was the last monarch of the Kingdom of Cyprus.
She was queen consort of Cyprus by marriage to James II of Cyprus, regent of Cyprus during the minority of her son James III of Cyprus in 1473 – 1474, and finally queen regnant of Cyprus.
She reigned from 26 August 1474 to 26 February 1489 and was declared a" Daughter of Saint Mark" in order that the Republic of Venice could claim control of Cyprus after the death of her husband, James II.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
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.
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.
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.
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.
Alice of Champagne
Alice of Champagne (1193 – 1246) was the Queen consort of Cyprus from 1210 to 1218, regent of Cyprus from 1218 to 1223, and of Jerusalem from 1243 to 1246.
She was the eldest daughter of Queen Isabella I of Jerusalem and Count Henry II of Champagne.
In 1210, Alice married her step-brother King Hugh I of Cyprus, receiving the County of Jaffa as dowry.
After her husband's death in 1218, she assumed the regency for their infant son, King Henry I.
In time, she began seeking contacts within her father's counties in France to bolster her claim to Champagne and Brie against her cousin, Theobald IV.
However, the kings of France never acknowledged her claim.
After a dispute with Philip of Ibelin, bailli of Cyprus in 1223, she left the island.
She married Bohemond, heir apparent to the Principality of Antioch and the County of Tripoli, but their marriage was annulled because of kinship.
She laid claim to the Kingdom of Jerusalem against the infant Conrad (the son of her niece Queen Isabella II of Jerusalem and the Holy Roman Emperor, Frederick II) who was absent from the kingdom in 1229, but the High Court of Jerusalem rejected her claim.
When her son reached the age of majority in 1232, Alice abdicated her regency and departed for France to claim Champagne and Brie.
She subsequently renounced her claim and returned to the Holy Land.
In 1240, she married Raoul of Nesle who was about half of her age at the time.
The High Court of Jerusalem proclaimed Alice and her husband regents for Conrad in 1243, but their power was only nominal.
Raoul of Nesle left the kingdom, and Alice, before the end of the year.
Alice retained the regency until her death in 1246.

Question: Who is Henry I Of Cyprus's maternal grandmother?
Answer: Isabella I of Jerusalem