Jiajak Jaqeli
Jiajak Jaqeli was the Empress consort of Alexios II of Trebizond.
Maria of Gothia
Maria of Gothia was the first wife of David of Trebizond, last Emperor of Trebizond, whom she married in 1426.
Rusudan of Georgia, Empress of Trebizond
Rusudan of Georgia, Empress of Trebizond was a consort of Manuel I of Trebizond, and the mother of Empress Theodora.
Very little is known for certain about her.
Alexander of Trebizond
Alexander Komnenos or Skantarios Komnenos was a co-emperor of the Empire of Trebizond, first with his father Alexios IV of Trebizond then, after several years in exile, with his brother John IV.
Eudokia Palaiologina
Eudokia Palaiologina or  (c. 1265 – 18 September 1302) was the third daughter of Byzantine Emperor Michael VIII Palaiologos and his wife, Theodora, a grandniece of Emperor John III Doukas Vatatzes of Nicaea.
In 1282 Eudokia married in Constantinople John II Megaskomnenos, Emperor of Trebizond with whom she had two sons, Alexios and Michael.
In 1298, after her husband's death and the ascension of her son Alexios II, she returned to her brother's court at Constantinople taking her younger son Michael with her.
Andronikos II Palaiologos received his sister, planning to use her to seal a diplomatic settlement with Stefan Uroš II Milutin, King of Serbia: the hand of Eudokia in return for a negotiated peace.
King Stefan was agreeable to this proposal, for one of his three wives had recently died. "
But nothing that Andronikos could do would influence his sister to entertain the prospect of life with a lecherous barbarian in the wilds of Serbia," writes Donald M. Nicol.
King Stefan was forced to settle for Andronikos' daughter Simonida by his second wife, Irene of Montferrat.
Meanwhile, Alexios II decided for himself to marry Djiadjak Jaqeli, a Georgian princess.
His uncle Andronikos II, who had been appointed his guardian by his father, wanted this marriage annulled; he had planned for Alexios to marry the daughter of the high court official Nikephoros Choumnos.
Eudokia used the pretext of inducing her son to dissolve the marriage to obtain her brother's permission to return to Trebizond in 1301; upon arriving, she instead advised her son to keep his Georgian wife.
Eudokia died in the following year, and William Miller speculates she was buried in the church of Saint Gregory of Nyssa.
Anthony Bryer has proposed that a Eudokia, who became a nun by the monastic name Euphemia, mentioned in a painted inscription recorded by Fallmerayer from the Panagia Theoskepastos Monastery, may have been Eudokia Palaologina.
This Eudokia has not been satisfactorily proven to be a member of the house of the Great Komnenoi, and Bryer offers a number of objections to any identification.
He notes that there is "a strong independent local nineteenth-century tradition" that Eudokia founded the church of St. Gregory of Nyssa before her death.
Lastly, Bryer notes that "it would not be surprising if she would have wished to put not only distance but a nun's veil between herself and her brother's ruthless and alarming marital plans (which included Mongol and Turkish alliances for other female members of his family) before she died in 1302."
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.
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.
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.
Kaya Alp
Kaya Alp was, according to Ottoman tradition, the son of Kızıl Buğa and the father of Suleyman Shah, who was, in turn, the grandfather of Ertuğrul, and the great grandfather of the Ottoman Empire founder, Osman I.
Pankratios of Trebizond
Pankratios or Pangratios was the first Metropolitan bishop of Trebizond following the Ottoman conquest of the Empire of Trebizond in 1461.
Nothing is known about Pankratios' origin or early career prior to his appointment as metropolitan.
The see had been vacant since the capture of Trebizond and the incorporation of the Empire of Trebizond to the Ottoman Empire in 1461, as the bulk of the Trapezuntine upper classes, including the secular nobility and the ecclesiastical hierarchy, were transferred to the Ottoman capital, Constantinople.
It was not until ca. 1472 that the vacancy was addressed.
This was partly the result of the appointment of the Trapezuntine Symeon I as Patriarch of Constantinople, but owed more to political considerations on the part of the Ottoman Sultan, Mehmed II: the Christians of the Pontus region around Trebizond had been restive against Ottoman rule, and were encouraged by the neighbouring Aq Qoyunlu sultan Uzun Hassan.
The latter was linked through family ties with the former imperial house of Trebizond, and lent his support to a scion of that house, Alexios Komnenos.
In order to counteract the threat of a rebellion, the Sultan elevated Symeon to the patriarchal throne, and he immediately appointed Pankratios to the metropolitan throne of Trebizond.
It appears, however, that the latter was unable to satisfy the Sultan's expectations about calming the province, and already after a few months Mehmed II demanded his replacement.
Pankratios was succeeded by Dorotheos II, and nothing further is known of him thereafter.

Question: Who is the maternal grandfather of Michael Of Trebizond?
Answer: Michael VIII Palaiologos