Cath Maige Tuired: The Second Battle of Mag Tuired (Author: [unknown])
section 7
There were four wizards in those four cities. Morfesa was in
Falias; Esras was in Gorias; Uiscias was in Findias; Semias was in Murias. Those are the four poets from whom the Túatha Dé learned
occult lore and secret knowledge.