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.
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.
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.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
Li Hong (Taoist eschatology)
Li Hong( Chinese: 李洪) is a messianic figure in religious Taoism prophecies to appear at the end of the world cycle to rescue the chosen people, who would be distinguished by certain talismans, practices and virtues.
Myths surrounding Li Hong took shape in literature during the Han dynasty.
He is depicted in the Taoist" Divine Incantations Scripture" as an ideal leader who would reappear to set right heaven( tian) and earth( dì) at a time of upheaval and chaos.
Li Hong is sometimes considered to be an avatar or reincarnation of Laozi, with whom he shares the surname Li. Prophesies concerning Li Hong's appearance have been used to legitimize numerous rebellions and insurgencies, all of which rallied around a Li Hong.
These were particularly prevalent during the fifth century, and continued to appear until the Song dynasty.
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.
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.
Emperor Gaozong of Tang
Emperor Gaozong of Tang (21 July 628 – 27 December 683), personal name Li Zhi, was the third emperor of the Tang dynasty in China, ruling from 649 to 683 (although after January 665 power and governance was primarily in the hands of his powerful second wife Empress Wu, later known as Wu Zetian).
Emperor Gaozong was the son of Emperor Taizong and Empress Zhangsun.
Emperor Gaozong was aided in his rule by Empress Wu during the later years of his reign after a series of strokes left him incapacitated.
Emperor Gaozong delegated all matters of state to his Strong wife and after he died in 683, power fell completely into the hands of Empress Wu, who subsequently became the only Empress regnant in Chinese history.
After his death, he was interred at the Qianling Mausoleum along with Wu Zetian.
Historians have generally viewed Emperor Gaozong as a weak ruler, inattentive to the business of the state and leaving such business to his powerful wife Empress Wu.
During the first part of his reign, Tang territorial gains, which started with his father Emperor Taizong, continued, including the conquest of Baekje, Goguryeo, and the Western Turkic Khaganate, but throughout the 670s, much of those gains were lost to the Tibetan Empire, Silla, Khitan, and Balhae.
Further, territory previously conquered that belonged to both the Göktürks and the Western Turkic Khaganate were subjected to repeated rebellions.
Li Hong
Li Hong  (652 – 25 May 675), formally Emperor Xiaojing (孝敬皇帝, literally, "the filial and respectful emperor") with the temple name of Yizong (義宗), was a crown prince (not emperor, despite his formal title) of the Chinese dynasty Tang Dynasty.
He was the fifth son of Emperor Gaozong and the oldest son of his second wife Empress Wu (later known as Wu Zetian), and he was made the crown prince in 656.
As he grew older, he often came in conflict with his ambitious and powerful mother Empress Wu, and it is commonly believed by traditional historians that she poisoned him to death in 675.
His father Emperor Gaozong, then still reigning, posthumously honored him with an imperial title.

Question: Who is the paternal grandmother of Li Hong?
Answer: Empress Zhangsun