The sister of St. Patrick in Jocelyn’s Life of St. Patrick. She was said to have been Patrick’s youngest sister and to have had seventeen sons.
Gallet makes her an ancestor of Arthur in the illustration below. Gallet makes Darerca’s sister Tigridia marry Grallo, Conan’s grandson, thus connecting her with Arthur, she is said to have married Conan himself.
Saint Monenna | The Legend of King Arthur