Pryderi, as has been seen, was despoiled of his swine by Gwydion. They were the gift of Arawn, but in the _Triads_ they seem to have been brought from Annwfn by Pwyll, while Pryderi acted as swineherd.[399] Both Pwyll and Pryderi are thus connected with those myths which told of the bringing of domestic animals from the gods' land. But since they are certainly gods, associated with the gods' land, this is perhaps the result of misunderstanding. A poem speaks of the magic cauldron of Pen Annwfn, i.e. Pwyll, and this points to a myth explaining his connection with Annwfn in a different way from the account in the _Mabinogi_. The poem also tells how Gweir was imprisoned in Caer Sidi (=Annwfn) "through the messenger of Pwyll and Pryderi."[400] They are thus lords of Annwfn, whose swine Gweir (Gwydion) tries to steal. Elsewhere Caer Sidi is associated with Manawyddan and Pryderi, perhaps a reference to their connection as father and son.[401] Thus Pryderi and Pwyll belong to the bright Elysium, and may once have been gods of fertility associated with the under-earth region, which was by no means a world of darkness. Whatever be the meaning of the death of Pryderi at the hands of Gwydion, it is connected with later references to his grave.[402] A fourth group is that of Beli and his sons, referred to in the _Mabinogi_ of Branwen, where one of them, Caswallawn, usurps the throne, and thus makes Manawyddan, like MacGregor, landless. In the _Dream of Maxen_, the sons of Beli are Lludd, Caswallawn, Nynnyaw, and Llevelys.[403] Geoffrey calls Beli Heli, and speaks of an earlier king Belinus, at enmity with his brother Brennius.[404] But probably Beli or Heli and Belinus are one and the same, and both represent the earlier god Belenos. Caswellawn becomes Cassivellaunus, opponent of Cæsar, but in the _Mabinogi_ he is hostile to the race of Llyr, and this may be connected with whatever underlies Geoffrey's account of the hostility of Belinus and Brennius (=Bran, son of Llyr), perhaps, like the enmity of the race of D[^o]n to Pryderi, a reminiscence of the strife of rival tribes or of Goidel and Brython.[405] As has been seen, the evidence for regarding Beli as D[^o]n's consort or the equivalent of Bile is slender. Nor, if he is Belenos, the equivalent of Apollo, is he in any sense a "dark" god. He is regarded as a victorious champion, preserver of his "honey isle" and of the stability of his kingdom, in a _Taliesin_ poem and in the _Triads_.[406] The personality of Casswallawn is lost in that of the historic Cassivellaunus, but in a reference to him in the _Triads_ where, with Caradawc and Gweirydd, he bears the title "war king," we may see a glimpse of his divine character, that of a god of war, invisibly leading on armies to battle, and as such embodied in great chiefs who bore his name.[407] Nynnyaw appears in Geoffrey's pages as Nennius, who dies of wounds inflicted by Cæsar, to the great grief of Cassivellaunus.[408]