There is no obvious connection between Pero and a wallet, at least not one that has come down to us. (Compare Paris, where there was a specific link with this word.) Nor is there a direct association between Pero and any kind of deficiency: in fact, just the reverse, since she attracted suitors in plenty and as a mother produced several children. There is an oblique reference that might be made here, however.
This is that Iphicles had become impotent through being frightened as a child and he was later cured by Melampus - who was a rival for Pero in marriage! But perhaps such a tenuous connection is best disregarded and another source should be sought. This might be from pero or peiro, 'to penetrate', which in Pero's case, as mentioned, could well have a sexual significance.
