Gwybodaeth was born out of the Di-rym, or the Void from the Song of Inceput, growing in strength to become the lord of the Eldritch. He does not align himself with the ideals of good or evil, instead seeking simply his own desires, which are consumed with his obsession with gathering all knowledge. This is compiled in the ever-changing amorphous Book of Gwybodaeth.
Gwybodaeth is the only one of the Eldritch who took a bride, Amaratsu, the Eldritch of Magic.