Llongborth, mentioned as the battle site
in the Gereint Elegy, could be a placename, but it
could equally well mean 'sea-port', a perfectly ordinary common noun.
Llongborth is believed by some authorities to have been Portsmouth, and
the name literally signifies the 'Haven of Ships'. But Lady Guest in her Mabinogion notes
informs us that other of her contemporaries including Reverend T. Price supposed it to be
Langport, in Somersetshire. This opinion was founded on the similarity of the names, and
the locality; Langport being situated on the river Parret, the Peryddon of the Welsh bards,
and the Pedridan of the Saxon Chronicle. This might be
strengthened by the claim of nearby Sherborne Abbey which claims to have
been granted land in Devon by a king Geraint.
Longborth could also be associated with
Portchester, the site of a fort of the Saxon Shore which has associated
with it a number of Germanic burials closely akin to those in Sussex.
As a common noun, it might
be strengthened by the occurrence of Geraint ap Erbin in Triad 14 as one
of the Three Seafarers of Britain and signify that the battle where he
fought and died was a sea port.