ホティウスの『ビブリオテーケー』の写本190には、パーンのエーコーへの片思いは、美人コンテストでのパーンの評決に怒ったアプロディーテが仕掛けたと書かれている<ref>Photius, Translated by René Henry (2003). ''Bibliothèque: Tome III: Codices 186-222''. Les Belles Lettres. Codex 190. ISBN:2251322221</ref>。
ノヌスの『ディオニューソス』には、エーコーに関する言及が多数ある。ノヌスの『ディオニューソス』には、エーコーに関する言及が多数ある。ノヌスの記述によると、パーンは頻繁にエーコーを追いかけたが、彼女の愛情を得ることはなかったという<ref>Nonnus, Translated by W. H. D. Rouse (1989). ''Dionysiaca: Books 1-15''. Loeb. Book XV, para. 306. ISBN:0674993799</ref>。
[[Nonnus]]’ ''[[Dionysiaca]]'' contains a number of references to Echo. In Nonnus’ account, though Pan frequently chased Echo, he never won her affection.<ref>[[Nonnus]], Translated by [[W. H. D. Rouse]] (1989). ''Dionysiaca: Books 1-15''. Loeb. Book XV, para. 306. {{ISBN|0674993799}}</ref> Book VI also makes reference to Echo in the context of the [[Flood myth|Great Deluge]]. Nonnus states that the waters rose so far that even high on the hills Echo was forced to swim. Having escaped the advances of Pan, she feared now the lust of [[Poseidon]].<ref>[[Nonnus]], ''Dionysiaca'', Book VI, para. 257.</ref>
Whereas Nonnus is adamant that Pan never wins Echo, in [[Apuleius]]' ''[[The Golden Ass]]'' Pan is described with Echo in his arms, teaching the nymph to repeat all manner of songs.<ref>[[Apuleius]], Translated by P. G. Walsh (2008). ''The Golden Ass''. Oxford University Press. Page 94, Book 5, para. 25. {{ISBN|0199540551}}</ref> Similarly in the ''[[Suda]]'' Echo is described as bearing Pan a child, ''[[Iynx]]''.<ref name="Sudias"/> Other fragments mention a second daughter, ''[[Iambe]]''.<ref name="OCD"/>