Palaimonius is the son of Hephaistos (Hephaestus) and one of the Argonauts; like his father, he was crippled. He is mentioned only in Argonautika by Apollonius Rhodius, book 1, line 202
Hephaistos & Unnamed Mother
With him came Palaemonius, son of Olenian Lernus, of Lernus by repute, but his birth was from Hephaestus, and so he was crippled in his feet, but his bodily frame and his valor no one would dare to scorn.
- Argonautika by Apollonius Rhodius, book 1, line 202