>>10499657>Simply put, in the 3rd century the driving force behind the transcribers and copyist of oral poetry did not exist in those zones as Rome wasn't yet a christian empire, and pagan romans did not bother writing down the barbarians' mythologies.Yeah, but why do you assume that oral tradition could've been preserved only by Romans and not Celts themselves? It's not like it's impossible, Tacitus or maybe Jordan references Edda when talking about Goths' exodus from Scandinavia, for example, and the Poetic Edda was scripted only in 12th century. So it's not like it couldn't have just become a part of local oral tradition desu
>They did NOT use their writing system to write about their myths and customsYes, but they did use them to commemorate people, see Vortiporius.