Fomorian Prophetess and Wife of Balor
Cethlenn was the wife of Balor and the mother of Ethniu. Before the Second Battle of Mag Tuired, she warned Balor that the battle would go badly for the Fomorians. He didn’t listen carefully enough. She was right.
She also fought in the battle herself. She wounded the Dagda — the All-Father of the Tuatha Dé, the most powerful and comprehensive god they had — and the wound troubled him for the rest of his life. The Fomorians lost the battle. They were defeated and broken as a power. But the Dagda carried a Fomorian queen’s spear-wound with him permanently. That was the cost of winning.
She is the most prominent Fomorian woman with prophetic gifts — proof that the Fomorian world was supernaturally perceptive as well as physically formidable. The Fomorians saw things coming. They just couldn’t stop them.
The town of Ballyshannon in County Donegal has a local feature associated with her name, connecting her to the same Donegal-Sligo coastline where much of the Fomorian world is geographically rooted.
Key facts about Cethlenn
- Names: Cethlenn; Ceithlenn
- Rules over: Fomorian prophecy
- Weapons: Spear (wounded the Dagda at the Second Battle of Mag Tuired)
- Animals: Not recorded
- Other Symbols: Not recorded
- Parents: Not recorded
- Siblings: Not recorded
- Spouse: Balor of the Evil Eye
- Children: Ethniu
- Greek equivalent: Cassandra (the prophet whose accurate warnings are ignored)
Link/cite this page
If you use any of the content on this page in your own work, please use the code below to cite this page as the source of the content.
Link will appear as Cethlenn: https://irishgodsandgoddesses.net - Irish Gods & Goddesses, March 22, 2026