*Gharanu (Phoroneus) = [<arabic] Qarin
Indra (wielder of Lightning; son of NIS-tiGRi) = Argos ('Flash' of Lightning; son of *NIS-aGa [Ni-obe])
Creirwy (daughter of Tegid Foel & of CERIDWen) = Niobe (daughter of Phoroneus & of KERDOi)
Garwy Hir (owner of the steed Gwirian Groddos [Triad 46c]; husband of Creirwy) = Neleus (owner of "a prize-winning team of four horses" [GM 139.e]; husband of Khloris)
Indeg ("hue of snow" [PDA, p. 106]; daughter of Garwy Hir [Triad 57]) = Peroi ("flocks" (CDCM, s.v. "Pero") were paid for her; daughter of Neleus)
PDA = Steve Blake & Scott Lloyd : Pendragon : the Definitive Account of the Origins of Arthur. http://books.google.com/books?id=mThSPuudkQQC&pg=PA106&lpg=PA106&dq=
CDCM = Pierre Grimal : Concise Dictionary of Classical Mythology.
Arthur (husband of Indeg) = Bias (husband of Peroi)