The legend of Cheraman Perumals is the medieval tradition associated with the Cheraman Perumals (Chera kings) of Kerala. The sources of the legend include popular oral traditions and later literary compositions. The time of origin of the legend is not known to scholars. It seems the legend once had a common source well known to all Kerala people. — Veluthat Kesavan (historian), History and Historiography in Constituting a Region: The Case of Kerala (2018)