[2] The majority of information about Lyppeius revolves around his conflict with his southern neighbor, Philip II of Macedon.

Shortly after Philip's chaotic accession in 359/8, following the death in battle of his brother Perdiccas III, he was forced to bribe the Paeonians to abandon their invasion of Macedonia.

[3] The payment, judged as small by modern historians, may have been made with promises of future tribute from Macedonia, but this never materialized.

[4] Instead, Philip reformed the army and invaded Paeonia after learning about the death of Agis, perhaps in the spring of 358.

[7] Lyppeius was consequently reduced to a vassal status for the remainder of his reign, but he evidently retained a degree of independence as he continued to mint coins in his own name.