O nome é formado a partir de um antropónimo de origem portuguesa (Pay < Pelay(o) < Pelagius), provavelmente o de um dos primeiros povoadores que chegaram a estas terras após a Reconquista Cristã.crcr

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…