Blathmac son of Cú Brettan son of Congus of the Fir Rois, 8th century (via Conor McDonough):
A stream of blood gushed forth – too severe –
so that the bark of every tree became red.
There was gore on surfaces of the world,
in the treetops of every chief forest. It was fitting for God’s elements,
beautiful sea, blue sky, this earth,
that they should change their aspect
when lamenting their hero (ll. 241-248, 257-260).