The peom Preiddeu Annwfn has been interpreted from many angles, a proto-grail story, a boastful poem of the poet's own prowess, as well as a lost campaign of Arthur in Ireland. The poem seems to resonate with a sad and mournful tone however. Let's look at the poem first.
Taliesin opens with this with praise to God first.
"I praise the Lord, the Ruler of t…