Chrisell: I think my definition of the word reintroduced is different to yours. You are saying that Reintroduced means the same as Introduced???
Chrisell: I know what Breton is. I wasn't sure if Merriment knew the difference between Breton and Brythoneg.
Merriment - I stand corrected and appologise - you did not say the rivers where called Alan.
"but obviously the resettlement of Brittany happened before the separation of the three languages" - My point exactly.
"It's non-existent as a name in Wales until it is reintroduced by the the Normans" - This doesn't prove anything! What I think you might not understand is that the 'Welsh'( a derogatory name given to us by the angl-saxons) lived all over the British Isles prior to the anglo-saxon invasion.
'Dyfyr apAlun Dyfed' Mabinogi? River in Dyfed called the Alun. Dyfyr the son of Alun Dyfed.