Everything you need to understand or teach Mabinogion by Anonymity.
King Arthur is mostly portrayed in all the tales as an ideal ruler who presides over a perfect kingdom, surrounded by the best warriors. He is a ruler and a warrior of great renown who, on the whole, demonstrates all of the virtues that are desirable in a king.
It is unclear exactly how old Arthur is, but his behaviour and wisdom seem to indicate an older man. His wife is Gwenhwyfar, and they have an ideal marriage (these tales contain no trace of the idea that Gwenhwyfar is an adulteress and Arthur is a cuckold). He seems to have an extensive family, and many of the warriors of his court. He owns a hunting dog named Cafall who is capable of bringing down both boars and stags.
The earliest portrayal of Arthur in "Culhwch and Olwen" is that of a vigorous warrior who is one petty king...
The Mabinogion Lesson Plans contain 119 pages of teaching material, including: