|• Succeeded by||Flintshire|
The name "Delyn" was formed by combining the names of the area's principal rivers: the Dee and the Alyn. The neighbouring district was originally named Alyn-Dee for the same reason. "Y Delyn" is also Welsh for "The Harp", a fact reflected in the borough's coat of arms.
- "Dawnswr Delyn FAQ". Archived from the original on 2016-03-03. Retrieved 2006-09-09.
- Civic Heraldry of England and Wales: Delyn Borough Council