Boann by Jim Fitzpatrick Boann the Irish mythology goddess of the River Boyne, a river in Leinster, Ireland. She was the daughter of Delbáeth, son of Elada, of the Tuatha Dé Danann. Her lover was the Dagda, by whom she had her son, Aengus. In order to hide their affair, the Dagda made the sun stand still for nine months; therefore, Aengus was conceived, gestated and born in one day.