Unresolved toponym. Corominas links it to the Mallorcan Aiamans and thinks of an etym, probably Celtic, *Aginnomantium. At the same time, he rules out a possible relationship with mountain, since, according to the Catalan etymologist, it is located between marshes and far from any mountain. However, this is not exactly the case, as the orography…

The name is formed from an anthroponym of Portuguese origin (Pay < Pelay(o) < Pelagius), probably that of one of the first settlers who arrived in these lands after the Christian Reconquest.crcr