Castle of Arianrhod

I've been the highest and I've been the lowest
There is nothing that I cannot know
I am all I am nothing, but I'll tell you something
I defend my chair as a throne
And I know the reason that way out of season
Lleu slew the wren with a stone
I tell you these things, but how can I know?
I'm three times in the castle of Arianrhod
We set forth like Arthur to reclaim our daughter
And the cauldron we'd lost in the trade
Atonement for insult resulted in tulmult
The highest of prices we paid
We set for the Ireland - we crossed to the otherland
Our king was a bridge between worlds
I tell you these things, but how can I know?
I'm three times in the castle of Arianrhod
Gwern in the fire exploded their ire
Bran poisoned - a spear through the thigh
The cauldron was shattered, but nothing else mattered
We claimed it, and fled with our lives
Seven hundred set sail, only seven returned
With the cauldron and the head of our king
I tell you these things, but how can I know?
I'm three times in the castle of Arianrhod
Three horns were hailing where Arthur lay waiting
To rise up hearty and hale
When the lance is forsaken, the sleeper awakens
To take a sip from the grail
Seven hundred set sail, but we seven returned
With the cauldron and the words of our king
I tell you these things, but how can I know?
I'm three times in the castle of Arianrhod
I've been the highest and I've been the lowest
There is nothing that I cannot know
I am all I am nothing, but I'll tell you something
I defend my chair as a throne
And I know the reason that way out of season
Lleu slew the wren with a stone
I tell you these things, but how can I know?
I'm three times in the castle of Arianrhod