Ptolemaios Aiakides?

[Olimpian]

Plutarch says in that very link:
"And now, in honour of Berenicé and Ptolemy, he gave the name of Ptolemy to his infant son by Antigone"

"By Antigone he had a son Ptolemy, Alexander by Lanassa, and Helenus, his youngest son, by Bircenna."

"Pyrrhus himself, then, with his men-at‑arms, tried to force his way directly against the many shields of the Spartans which confronted him, and over a trench which was impassable and afforded his soldiers no firm footing owing to the freshly turned earth. But his son Ptolemy, with two thousand Gauls and picked Chaonians, went round the trench and tried to force a passage where the waggons were."

Etc., etc.

Yes, I saw that. Most certainly Wikipedia has it wrong (not a very reliable source, I know). I am just curious to know if there are any other sources about the Epeirote rulers, especially after Pyrrhus.

EDIT:To put it more clearly, I would like to read about the reigns of those who fallowed Pyrrhus in front of the Epeirote League(or Kingdom?), beacuse it seems that the little info Wiki has to offer is different from what Plutarch says.