In the series he did not die from his wounds, instead, Eardwulf was the one to end his life.
He needed to be the one to kill Athelred as his sister Eadith ended up turning against her brother and joining Aethelflaed.
Eadith needed a reason to leave her brother, and the fact she saw him kill the Mercian leader was the perfect opportunity.
Speaking to The Screen Chronicles about his fall in the battle, Regbo said: “It was a long time coming. It was a kind of accident, it happens.
“I think I just tried to take acting out of the equation by actually winding myself basically, you take a genuine fall to the ground backwards. Not hitting my head but just genuinely hitting the ground.