In one tale the Dagda, the chief god, desires Boann, the goddess of the River Boyne. She lives at Brú na Bóinne with her husband Elcmar. The Dagda impregnates her after sending Elcmar away on a one-day errand. To hide the pregnancy from Elcmar, the Dagda casts a spell on him, making "the sun stand still" so he will not notice the passing of time. Meanwhile, Boann gives birth to Aengus, who is also known as Maccán Óg ('the young son'). Eventually, Aengus learns that the Dagda is his true father and asks him for a portion of land. In some versions of the tale, the Dagda helps Aengus take ownership of the Brú from Elcmar. Aengus asks to have the Brú for "a day and night", but then claims it forever, because all time is made up of "day and night". Other versions have Aengus taking over the Brú from the Dagda himself by using the same trick. The Brú is then named "Brug maic ind Óig" after him. In "The Pursuit of Diarmuid and Gráinne", Aengus takes Diarmuid's body to the Brú.