Irene of Montferrat
Yolande of Montferrat (– 1317 in Constantinople) (also known as Violante, then Empress Irene) was the second wife of Andronikos II Palaiologos and thus empress of the Byzantine Empire.
She was the heir of the Margraviate of Montferrat.
Born in Casale, she was daughter of William VII, Marquess of Montferrat and his second wife Beatrice of Castile.
Her maternal grandparents were King Alfonso X of Castile and his wife Violante of Aragon.
Yolande (variation of Violante) was named after her grandmother.
In 1284, Andronikos II, a widower by his first marriage with Anna of Hungary, married Yolanda (who was renamed Eirene as Empress).
She and Andronikos II were distant cousins, both being descendants of Andronikos Doukas Angelos (ca. 1122-1185).
With her, Eirene brought the Montferrat rights to the kingdom of Thessalonica, a dominion that, despite having been conquered half-a-century before Eirene's birth by the Byzantine state of Epirus, was still claimed by its short-lived (1204–1224) Montferrat royal dynasty.
It was later proven that the Italian Montferrat had no living male heirs of the Aleramici dynasty, and Eirene's sons were entitled to inherit it upon the 1305 death of Eirene's brother John I, Marquess of Montferrat.
The marriage produced the following children:
Eirene's stepson, Michael IX Palaiologos was intended to succeed her husband as emperor, but ultimately it was Michael's son Andronikos III Palaiologos, who became the successor instead of Michael.
This was largely due to the work Eirene did to ensure some power and property to her own offspring.
Eirene left Constantinople in 1303 and settled in Thessaloniki.
She set her own court in the city and controlled her own finances and foreign policy until her death fourteen years later.
Nicephorus Gregoras portrayed her as an ambitious and arrogant leader in his historical writings.
Demetrios Palaiologos Metochites
Demetrios Palaiologos Metochites( died 29 May 1453) was a Byzantine nobleman and high- ranking governor and official, who served as the last Byzantine governor of Constantinople.
Demetrios Palaiologos (son of Andronikos II)
Demetrios Angelos Doukas Palaiologos (ca. 1297 – after 1343) was a son of the Byzantine Emperor Andronikos II Palaiologos (reigned 1282–1328) and his second wife, Irene of Montferrat.
Born ca. 1297, Demetrios was the youngest of Andronikos II's sons.
In ca.
1304, he was sent to the court of the Serbian ruler Stephen Uroš II Milutin, intended to become his successor; his stay there was short, however, and he soon returned to Constantinople.
In 1306 he was named to the highest court rank, that of Despot.
In the Byzantine civil war of 1321–1328, Demetrios sided with his father against his nephew, Andronikos III Palaiologos.
In 1327–1328, during the last stage of the civil war, he served as governor of Thessalonica.
Eventually he was forced to flee to Serbia, while Andronikos III managed to take his wife and children captive, but Demetrios returned to Constantinople after Andronikos III's final victory.
Demetrios was accused of conspiring against his nephew in 1336/37, but Andronikos III dropped the charges.
Nothing more is known of him after 1343.
Demetrios was also an accomplished theologian and miniature painter.
The identity of his wife is not established, but she was possibly Theodora Komnene.
By her he had a daughter, the future empress Irene, and at least one other, unnamed, child.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
Helena Palaiologina (daughter of Demetrios Palaiologos)
Helena Palaiologina( April 1442 – 1470) was the daughter of Demetrios Palaiologos, Despot of Morea and his second wife Theodora Asanina, daughter of Paul Asanes.
Some historians erroneously suppose that she entered the harem of Sultan Mehmed II, however the contemporary sources state that Sultan did not marry her, and she died alone in Edirne.
Henry Krause
Henry J." Red" Krause, Jr.( August 28, 1913 – February 20, 1987) was an American football offensive lineman in the National Football League for the Brooklyn Dodgers and the Washington Redskins.
He played college football at St. Louis University.
He is the grandfather of Jennifer Krause
He is the great grandfather of Payton Hoeing
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.
Fred Le Deux
Frederick" Fred" Le Deux( born 4 December 1934) was an Australian rules footballer who played with Geelong in the Victorian Football League( VFL).
He is the grandfather of Tom Hawkins.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.

Question: Who is Demetrios Palaiologos (Son Of Andronikos Ii)'s maternal grandfather?
Answer: William VII, Marquess of Montferrat