The meaning of the name Eilonwy is Created Name. The origin of the name Eilonwy is English. This is the culture in which the name originated, or in the case of a word, the language.
Name created by author Lloyd Alexander for the princess character in his children's fantasy series "The Chronicles of Prydain." He purposely used historic Welsh name elements. The series later became a Disney movie: The Black Cauldron (1985). Prono