In the centre of the Forest of Dubros were magical berries from the rowan tree that could restore the youth of an old person, guarded by the giant Searbhan on the instructions of the Tuatha Dé Danann. Diarmuid and Gráinne asked Searbhan if they could live and hunt game in the forest. Searbhan agreed on the condition that they would not eat the berries. Gráinne asked to eat the berries. Searbhan refused and attacked Diarmuid with his massive club. Diarmuid used Searbhan's own weapon to kill him.