Anna of Hungary (Byzantine empress)
Anna of Hungary (1260 – 1281) was a Princess of Hungary and Croatia, the daughter of Stephen V of Hungary and Elizabeth the Cuman.
On 8 November 1273, Anna married Andronikos II Palaiologos.
According to George Pachymeres, the couple had two children:
Anna died before her husband became senior emperor in 1282.
However every Palaiologos emperor to the Fall of Constantinople in 1453 descended from her through her son Michael.
Theodora Palaiologina Synadene
Theodora Palaiologina Synadene  was the daughter of Constantine Palaiologos and Irene Komnene Laskarina Branaina.
Through her father, she was a half-niece of the Byzantine Emperor Michael VIII Palaiologos.
Theodora Tocco
Theodora Tocco( née Maddalena Tocco)( died November 1429) was the first wife of Constantine Palaiologos while he was Despot of Morea.
Her husband would become the last Emperor of the Eastern Roman Empire.
Constantine Palaiologos (son of Andronikos II)
Constantine Doukas Komnenos Palaiologos (1278/81–1334/35) was a Byzantine prince of the Palaiologos dynasty, who received the supreme title of Despot and served as provincial governor.
Constantine was the second son of Emperor Andronikos II Palaiologos (r. 1282–1328) and his first wife, Empress Anna of Hungary.
He was born sometime between 1278 and 1281.
As his father was already a reigning co-emperor alongside Michael VIII Palaiologos, he was styled a "porphyrogennetospurple-born"), as attested on his seals.
In 1294 he was named Despot, the highest court rank in the Byzantine Empire, on the occasion of his first marriage to Eudokia, the daughter of Theodore Mouzalon.
In 1305, he fought in the disastrous Battle of Apros against the Catalan Company.
In 1317, he intercepted his half-sister Simonida, the queen-consort of Serbia, who wished to retire to a monastery after the death of her mother, Irene of Montferrat, and handed her over to the Serbs.
At about this time he married a second time, again to a Eudokia, but both his marriages were childless.
He had one illegitimate son, Michael Katharos.
In 1319 he served as governor of Avlona, and in 1321–1322 as governor of Thessalonica.
It was in this position that the outbreak of the Byzantine civil war of 1321–1328 found him; in 1322 he was imprisoned by his nephew, Andronikos III Palaiologos, at Didymoteichon.
Constantine then became a monk, under the monastic name Kallistos.
He died in 1334/35.
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.
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.
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.
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.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.

Question: Who is Constantine Palaiologos (Son Of Andronikos Ii)'s maternal grandmother?
Answer: Elizabeth the Cuman