Editing Sir Kay (section)

===''Pa Gur yv y Porthaur''===
One of the earliest direct reference to Cai can be found in the 10th-century poem ''Pa Gur'', in which Arthur recounts the feats and achievements of his warriors so as to gain entrance to a fortress guarded by [[Glewlwyd Gafaelfawr]], the titular porter. The poem concerns itself largely with Cai's exploits:

{{quote|<poem>Prince of the plunder, / The unrelenting warrior to his enemy; / Heavy was he in his vengeance; / Terrible was his fighting.
When he would drink from a horn, / He would drink as much as four; / When into battle he came / He slew as would a hundred.
Unless God should accomplish it, / Cei's death would be unattainable.
Worthy Cei and Llachau / Used to fight battles, / Before the pain of livid spears [ended the conflict].
On the top of Ystarfingun / Cei slew [[Nine sorceresses|nine witches]]. / Worthy Cei went to Ynys Mon / To destroy lions. / Little protection did his shield offer / Against [[Cath Palug|Palug's Cat]].<ref name="Pa Gur">{{usurped|1=[https://web.archive.org/web/20110723202344/http://www.markadderley.net/arthur/welsh-arthur/pagur.html ''Pa Gur'']}}</ref></poem>}}