Caorthannach

"The mother of all demons, the Caorthannach is one of the greatest foes that St. Patricks was ever said to face. This demon was said to give birth to the devil himself, and for hundreds of years produced many off spring that caused havoc all across Ireland. She was said to live in a cave underneath Lough Derg (Loch of The Red Eye) which acted as a direct gateway to the otherworld."
-http://www.leprechaunmuseum.ie/folklore-and-mythology/otherworld/caorthannach/
Category:Celtic
Category:Infernal