Euphrosyne Doukaina Kamatera
Euphrosyne Doukaina Kamaterina or better Kamatera (– 1211) was a Byzantine Empress by marriage to the Byzantine Emperor Alexios III Angelos.
Euphrosyne was the daughter of Andronikos Kamateros, a high-ranking official who held the titles of "megas droungarios" and "pansebastos" and wife, an unknown Kantakouzene.
She was related to the Emperor Constantine X and Irene Doukaina, empress of Alexios I Komnenos.
Both of her brothers had rebelled against Andronikos I Komnenos; one was imprisoned and the other was blinded.
Constantine Dalassenos (thalassokrator)
Constantine Dalassenos(" fl." ca. 1086– 1093) was a prominent Byzantine military leader on land and sea during the early reign of Emperor Alexios I Komnenos( r. 1081 – 1118), especially in the campaigns against Tzachas of Smyrna.
His life is only known from the" Alexiad" of Anna Komnene.
Prithvipati Shah
Prithvipati Shah( ?–1716) was the king of the Gorkha Kingdom in the Indian subcontinent, present- day Nepal.
He was the grandfather of Nara Bhupal Shah.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
Guillaume Wittouck
Guillaume Wittouck( 1749- 1829) was a Belgian lawyer and High Magistrate.
He was the Grandfather of industrialist Paul Wittouck.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
Sophia Eudokia Laskarina
Sophia Eudokia Laskarina( born between 1210 and 1212, died between 1247 and 1253) was a Byzantine princess.
She was a daughter of Theodore I Laskaris, Emperor of Nicaea, and Anna Komnene Angelina.
She was originally called Eudokia and renamed Sophia.
She was engaged to Robert I, Latin Emperor, but the marriage was blocked by the Patriarch of Constantinople.
She married firstly and divorced Frederick II, Duke of Austria, secondly( before 1230) Anseau de Cayeux, Governor of Asia Minor.
Anna Komnene Angelina
Anna Komnene Angelina or Comnena Angelina (c. 1176 – 1212) was an Empress of Nicaea.
She was the daughter of the Byzantine Emperor Alexios
III Angelos and of Euphrosyne Doukaina Kamatera.
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.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).

Question: Who is Anna Komnene Angelina's maternal grandfather?
Answer: Andronikos Kamateros