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.
Hüma Hatun
Hüma Hatun (1410 ‒ September 1449) was the fourth wife of Ottoman Sultan Murad II and mother of Mehmed II and the grandmother of Bayezid II.
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.
Gülbahar Hatun (wife of Mehmed II)
Gülbahar Hatun( 1432 – 1492) was the consort of Sultan Mehmed II, and mother of Sultan Bayezid II of the Ottoman Empire and the grandmother of Selim I.
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.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
Duryodhana
Duryodhana (literally means Dur=
Extremely hard Yodhana= Yudh/Fight; the one with whom the fight is extremely hard) also known as Suyodhana, is a major character in the Hindu epic "Mahabharata" and was the eldest of the Kauravas, the hundred sons of blind king Dhritarashtra and Queen Gandhari.
Being the first born son of the blind king, he was the crown prince of Kuru Kingdom and its capital Hastinapura along with his cousin Yudhishtra who was older than him.
Karna was Duryodhana's closest friend.
Notably, Duryodhana, with significant assistance from Karna, performs Vaishnava Yagna when the Pandavas are in exile.
Unlike Bhima, who overly relied on his strength to defeat opponents, Duryodhana used his greater skill in weilding the mace to defeat opponents.
This extreme proficiency in mace fighting is what allowed him to go toe-to-toe with the former, possibly even defeating him, had the former not resorted to unfair practices.
He was also an extremely courageous warrior and he was said to be a just ruler.
Duryodhana's greed and arrogance, were the two qualities said to lead to his downfall in the Mahabharata.
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.
Laxman Kumara
In the Hindu epic "Mahabharata", Laxman Kumara or simply Laxman (Lakshman(a)) is the son of Duryodhana, and grandson of Dhritarashtra.
He had a twin sister called Lakshmanaa who was kidnapped by Samba (Krishna's son).
Not much is revealed about Laxman in the "Mahabharata".

Question: Who is Laxman Kumara's paternal grandmother?
Answer: Gandhari