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.
Michael of Trebizond
Michael Megas Komnenos (Greek:
Μιχαήλ Μέγας Κομνηνός, "Mikhaēl Megas Komnēnos"), (c. 1288– after 1355), Emperor of Trebizond for one day, July 30, 1341 and from May 3, 1344 to December 13, 1349.
He was a younger son of Emperor John II of Trebizond and Eudokia Palaiologina.
Jadwiga Snopkowska
Jadwiga Snopkowska( c. 1558–1606) was the first wife of Marek Sobieski, the mother of Jakub Sobieski and the grandmother of King John III Sobieski of Poland.
Irene of Trebizond
Irene of Trebizond( died around 1382) was the bigamous wife of Basil of Trebizond, by whom he had two sons, Alexios and John( later Alexios III of Trebizond), and possibly three daughters Anna, Maria and Theodora.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
Maria of Gothia
Maria of Gothia was the first wife of David of Trebizond, last Emperor of Trebizond, whom she married in 1426.
Helena Kantakouzene, Empress of Trebizond
Helena Kantakouzene( died 1463) was the second wife of David of Trebizond, the last Emperor of Trebizond.
Recent research has led to doubts regarding her existence.
John III of Trebizond
John III Megas Komnenos or Grand Comnenus ("Iōánnēs G′ Mégas Komnēnós"; – 1362) was emperor of Trebizond from September 4, 1342, to May 3, 1344.
He was a son of Emperor Michael of Trebizond (who had reigned for a day in 1341)
and Acropolitissa, a daughter of Constantine Acropolites.
John lived most of his life in Constantinople where his father had lived since .
When Michael became Emperor of Trebizond for a day in 1341 and was quickly deposed and imprisoned by "megas doux" John the Eunuch, John was still in Constantinople.
However, in 1342 the leaders of the "Scholarioi", Niketas Scholares and Gregory Meitzomates, visited him there and persuaded the young man to come with them to Trebizond and take the throne.
With the approval of the Byzantine government, the group set out for Trebizond in September 1342 after enlisting the support of three Genoese galleys, bringing their little fleet to a total of five ships.
After a short but fierce fight John and his supporters captured the city on September 4, aided by a popular uprising in their favor.
After the coronation of John III as emperor, the deposed Empress Anna Anachoutlou was strangled, and her noble supporters executed or exiled shortly following John's coronation in Panagia Chrysokephalos Church.
Both William Miller and George Finlay describe John III as a weak and dissolute ruler, who cared only for entertainment, self-indulgence, and luxury; he showed no interest over his own father who remained the prisoner of "megas doux" John the Eunuch.
Upon the death of the "megas doux", Niketas marched to Limnia where he freed Michael then returned with him to Trebizond to depose John.
On May 3, 1344 John was banished to the monastery of St. Sabas (where he was kept under a Byzantine guard) and his father was restored to the throne.
The deposed emperor was eventually transferred by his father to Constantinople and from there in 1345 to Adrianople.
He escaped from there in c. 1357 and made his way to Sinope to regain his throne, only to die in that city in 1362.
Michael Panaretos tells us John had a son, but not his name; all that Panaretos records about him is that he escaped from captivity in 1363 and fled first to Caffa, then to Galata.
Anna Philanthropene
Anna Philanthropene( 1395 – 1404) was the second Empress consort of Manuel III of Trebizond.
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.

Question: Who is John Iii Of Trebizond's paternal grandmother?
Answer: Eudokia Palaiologina