Ah i see but as i pointed out they lost everything and even in britian we know more about our celtic ancestors than the elves do about themselves, what about the possibility of someone from the shadows erasing elven history what are your thoughts on that?
Well actually the Dalish got a number of things right about their past .
Now it's a bit complicated part of elven history is hidden because the language was lost , because some writing were done with magic (and that knowledge was lost so you can't find those texts) , and some place you can't access without again a magic which was lost.
There's some ancient elves but they aren't friendly at all.
But it's possible some knowledge was destroyed , and it's obvious some ancient elves , like Solas , Mythal are not telling everything they know.
Now would some people would get out of their way to do it?Don't know.
The only people after ancient elven knowledge are Dalish , but with their limited means , there's nothing to be too nervous about.
And Tevinter , and in this case yes I could imagine someone who would want to keep Tevinter from discovering too many things.
You can even say the Chantry went against some part of elven culture Tevinter had " stolen ", like slavery , toying with magic , worshipping a number of different gods and getting boons and advice from them etc..
Now is this related , no idea.