\'The myth of Celtic and Roman Britain\'

[Phaichtos]

Definitely. It is a phenomenon I'd always thought of as being plausible, especially considering what I remembered about the indigenous peoples of North America when the Europeans came; the explorers were obviously largely ignorant of the natives at first, but their later classifications of them showed the groups as relatively amorphous bodies with sometimes difficult to pin down identity. Peter S Wells' The Barbarians Speak: How the Conquered Peoples Shaped Roman Europe really caused me to think about this having happened in the Old World as well.