Editing Gwydion (section)

===Lleu's death and resurrection===
Blodeuwedd has an affair with [[Gronw Pebr]], the lord of [[Penllyn (cantref)|Penllyn]], and the two conspire to murder Lleu. Blodeuwedd tricks Lleu into revealing how he may be killed, since he can not be killed during the day or night, nor indoors or outdoors, neither riding nor walking, not clothed and not naked, nor by any weapon lawfully made.  He reveals to her that he can only be killed at dusk, wrapped in a net with one foot on a cauldron and one on a goat and with a spear forged for a year during the hours when everyone is at mass.  With this information she arranges his death.

Struck by the spear thrown by Gronw's hand, Lleu transforms into an [[eagle]] and flies away. Gwydion tracks him down and finds him perched high on an oak tree. Through the singing of an [[englyn]] (known as [[englyn Gwydion]]) he lures him down from the [[oak]] tree and switches him back to his human form.  Gwydion and Math nurse Lleu back to health before reclaiming his lands from Gronw and Blodeuwedd. In the face-off between Lleu and Gronw, Gronw asks if he may place a large stone between himself and Lleu's spear. Lleu allows him to do so, then throws his spear which pierces both the stone and Gronw, killing him. Gwydion corners Blodeuwedd and turns her into an [[owl]], the creature hated by all other birds. The tale ends with Lleu ascending to the throne of Gwynedd.