Philip III of Macedon in the context of "Vergina Sun"

The Partition of Babylon was the first of the conferences and ensuing agreements that divided the territories of Alexander the Great. It was held at Babylon in June 323 BC.Alexander’s death at the age of 32 had left an empire that stretched from Greece all the way to Pakistan. The issue of succession resulted from the claims of the various supporters of Philip Arrhidaeus (Alexander’s half-brother), and the as-of-then unborn child of Alexander and Roxana, among others. The settlement saw Arrhidaeus and Alexander’s child designated as joint kings with Perdiccas serving as regent. The territories of the empire became satrapies divided between the senior officers of the Macedonian army and some local governors and rulers. The partition was solidified at the further agreements at Triparadisus and Persepolis over the following years and began the series of conflicts that comprise the Wars of the Diadochi. The term "Partition of Babylon" is a modern designation.

Ptolemy I Soter (/ˈtɒləmi/; Greek: Πτολεμαῖος Σωτήρ, Ptolemaîos Sōtḗr, "Ptolemy the Savior"; c. 369/68 BC – January 282 BC) was a Macedonian Greek general, historian, and successor of Alexander the Great who went on to found the Ptolemaic Kingdom centered on Egypt. Ptolemy was king and pharaoh of Ptolemaic Egypt from 305/304 BC to his death in 282 BC, and his descendants continued to rule Egypt until 30 BC. During their rule, Egypt became a thriving bastion of Hellenistic civilization and Alexandria a great seat of Greek culture.

Ptolemy I was the son of Arsinoe of Macedon by either her husband Lagus or Philip II of Macedon, the father of Alexander. However, the latter is unlikely and may be a myth fabricated to glorify the Ptolemaic Dynasty. Ptolemy was one of Alexander's most trusted companions and military officers. After the death of Alexander in 323 BC, Ptolemy retrieved his body as it was en route to be buried in Macedon, placing it in Memphis instead, where it was later moved to Alexandria in a new tomb. Afterwards he joined a coalition against Perdiccas, the royal regent over Philip III of Macedon. Perdiccas invaded Egypt but was assassinated by his own officers in 320 BC, allowing Ptolemy I to consolidate his control over the country. After a series of wars between Alexander's successors, Ptolemy gained a claim to Judea in southern Syria, which was disputed with the Seleucid king Seleucus I. He also took control of Cyprus and Cyrenaica, the latter of which was placed under the control of Ptolemy's stepson Magas. Ptolemy also commanded the construction of the Library of Alexandria and of the Lighthouse of Alexandria, one of the Seven Wonders of the Ancient World.

Cleopatra of Macedonia (Greek: Κλεοπάτρα της Μακεδονίας; c. 355/354 BC – 308 BC), or Cleopatra of Epirus (Greek: Κλεοπάτρα της Ηπείρου) was an ancient Macedonian princess and later queen regent of Epirus. The daughter of Philip II of Macedon and Olympias of Epirus, she was the only full sibling of Alexander the Great. Her other siblings include half sisters Thessalonike and Cynane, and half-brother Philip III of Macedon.

Perdiccas (Greek: Περδίκκας, Perdikkas; c. 355 BC – 320 BC) was a Macedonian general, successor of Alexander the Great, and the regent of Alexander's empire after his death. When Alexander was dying, he entrusted his signet ring to Perdiccas. Initially the most pre-eminent of the successors, Perdiccas effectively ruled Alexander's increasingly unstable empire from Babylon for three years until his assassination, as the kings he ruled for were incapable.

Perdiccas was born to Macedonian nobility. A supporter, somatophylax (bodyguard) and hetairos (elite cavalry commander) of Alexander, he took part in Alexander's campaign against the Achaemenid Persian Empire, distinguishing himself at the battles of Thebes and Gaugamela, and followed Alexander into India. When Alexander died in 323 BC, Perdiccas rose to become supreme commander of the imperial army, as well as regent for Alexander's vast empire, ruling on behalf of Alexander's intellectually disabled heir, King Philip III Arrhidaeus, and Alexander's infant son, King Alexander IV of Macedon.

The Partition of Triparadisus was a power-sharing agreement passed at Triparadisus in 321 BC between the generals (Diadochi) of Alexander the Great, in which they named a new regent and arranged the repartition of the satrapies of Alexander's empire among themselves. It followed and modified the Partition of Babylon made in 323 BC upon Alexander's death.

Following the death of Alexander, the rule of his empire was given to his half-brother Philip Arrhidaeus and Alexander's son Alexander IV. However, since Philip was mentally ill and Alexander IV born only after the death of his father, a regent was named as Perdiccas; in the meantime, the former generals of Alexander were named satraps of the various regions of his empire.

Eurydice (Greek: Εὐρυδίκη Eurydikē; c. 337–317 BC), often referred to as Adea Eurydice, was the Queen consort of Macedon, wife of Philip III and daughter of Amyntas IV and Cynane.