The Dagda (modern spelling: Daghdha, likely from Proto-Celtic: Dagodeiwos, "the good god") is an important god of Irish mythology. The Dagda is a father-figure and a protector of the tribe. In some texts his father is Elatha, in others his mother is Ethniu. Other texts say that his mother is Danu; while others yet place him as the father of Danu, perhaps due to her association with Brigit, daughter of the Dagda. The Dagda's siblings include the gods Ogma and Ler.
He is also known by the epithets Eochaid Ollathair ("All-father"), Ruad Rofhessa ("lord of great knowledge"), Samildanach ("many-skilled"), Cera (possibly meaning "creator"), Fer Benn ("horned man" or "man of the peak"), Easal, Eogabal, Crom-Eocha and Ebron (which seem to refer to yew).(Wikipedia)