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.
Alkimachos of Pydna
Alkimachos of Pydna, son of Neoptolemus, was a three- year- old child buried in Pydna( 2nd/ 1st century BC).
The epigraphy of the tomb stele declares that he was a descendant of Olympias, mother of Alexander the Great.
Pydna is also a possible place for the tomb of Olympias.
Alexander I of Epirus
Alexander I of Epirus( c. 371 BC – 331 BC), also known as Alexander Molossus, was a king of Epirus( 343/2–331 BC) of the Aeacid dynasty.
As the son of Neoptolemus I and brother of Olympias, Alexander I was an uncle of Alexander the Great.
He was also an uncle of Pyrrhus of Epirus.
Olympias II of Epirus
Olympias (in Greek Ὀλυμπιάς, ; lived 3rd century BC) was a queen and regent of Epirus.
She was daughter of Pyrrhus, king of Epirus and his first wife Antigone.
She was the wife of her own paternal half-brother Alexander II.
After his death she assumed the regency of the kingdom on behalf of her two sons, Pyrrhus II and Ptolemy; and in order to strengthen herself against the Aetolian League she gave before 239 BC her daughter Phthia in marriage to Demetrius II, king of Macedonia.
By this alliance she secured herself in the possession of the sovereignty, which she continued to administer till her sons were grown up to manhood, when she resigned it into the hands of Pyrrhus II.
But the deaths of that prince and his brother Ptolemy followed in quick succession, and Olympias herself died of grief for her double loss.
Such is Justin's statement: according to another account Olympias had poisoned a Leucadian damsel named Tigris, to whom her son Pyrrhus was attached, and was herself poisoned by him in revenge.
Leonidas of Epirus
Leonidas of Epirus or" Leuconides", was a kinsman of Olympias, the mother of Alexander the Great, who was entrusted with the main superintendence of Alexander's education in his earlier years, apparently before he became a student of Aristotle.
Nicanor of Epirus
Nicanor(" Nīkā́nōr") of Epirus was a son of Myrton of Epirus, and lived in the 3rd to 2nd centuries BCE.
Along with his father, he supported the oppressive and rapacious proceedings of Charops of Epirus in the government of their native country.
Pyrrhus II of Epirus
Pyrrhus II( Greek: Πύρρος) was the son of Olympias II and Alexander II of Epirus.
He was a brother of Ptolemy and Phthia of Macedon.
He ruled as king of Epirus from 242 BC to 237 BC.
He had two daughters: Deidamia II who was the last ruler of the Aeacid Dynasty and Nereis who married Gelon of Syracuse.
Antigone of Epirus
Antigone (born before 317 BC-295 BC) was a Greek Macedonian noblewoman.
Through her mother's second marriage she was a member of the Ptolemaic dynasty and through her marriage to Pyrrhus
she was queen of Epirus.
Antigone was the daughter and the second child of Berenice, a noblewoman from Eordeaea, and her first husband Philip.
She had an elder brother called Magas and a younger sister called Theoxena.
Antigone's father, Philip was the son of Amyntas by an unnamed mother.
Based on Plutarch (Pyrrhus 4.4), her father was previously married and had children, including daughters.
He served as a military officer in the service of the Macedonian King Alexander the Great and commanded one of the Phalanx divisions in Alexander's wars.
Berenice's mother was the niece of the powerful regent Antipater and was related to members of the Argead dynasty.
About 318 BC, Antigone's father died of natural causes.
After Philip's death, Antigone's mother took her and her siblings to Egypt where they were a part of the entourage of her mother's cousin Eurydice.
Eurydice was then the wife of Ptolemy
I Soter, the first ruler and founder of the Ptolemaic dynasty.
By 317 BC, Ptolemy I had fallen in love with Berenice and divorced Eurydice to marry her.
Through her mother's marriage to Ptolemy I, Antigone was a stepdaughter to Ptolemy I and lived in her stepfather's court.
Her mother bore
Ptolemy I three children: two daughters, Arsinoe II, Philotera and the future Pharaoh Ptolemy II Philadelphus.
In 300 BC or 299 BC, Pyrrhus of Epirus was sent as a hostage to Egypt by Demetrius I of Macedon as part of a short-lived rapprochement between Demetrius I and Ptolemy I.
In 299 BC/298 BC, Ptolemy I arranged for Pyrrhus to marry Antigone.
Pyrrhus obtained a fleet of ships and funding from Ptolemy I and set sail with Antigone for his kingdom in Epirus.
Pyrrhus came into an agreement with his relative Neoptolemus II of Epirus, who had usurped the kingdom, to jointly rule Epirus.
Antigone bore Pyrrhus two children: a daughter called Olympias and a son called Ptolemy.
Antigone possibly died in childbirth, as she seems to have died the same year as her son was born.
As a posthumous honour to his first wife, Pyrrhus founded a colony called Antigonia, which he named after her.
Neoptolemus I of Epirus
Neoptolemus I of Epirus( 370–357 BC) was a Greek king of Epirus and son of Alcetas I, and father of Troas, Alexander I of Epirus and Queen Olympias.
He was a maternal grandfather of Alexander the Great.
He claimed he was a descendant of hero Achilles and King Lycomedes, while Emperor Caracalla claimed that he was a descendant of Neoptolemus I. Olympias was originally known as" Polyxena" and it is possible that Neoptolemus gave her that name.
Phthia of Macedon
Phthia( in Greek Φθια; lived 3rd century BC) was a daughter of Alexander II( 272 – 260 BC), king of Epirus, and his half- sister Olympias II.
Phthia became the wife of Demetrius II( 239 – 229 BC), king of Macedonia.
The match was arranged by her mother Olympias, who was desirous of thus securing the powerful assistance of the Macedonian king to support herself on the throne of Epirus after the death of Alexander.

Question: Who is the maternal grandfather of Olympias Ii Of Epirus?