As my last nights random post about the fact that they speak Welsh in parts of Argentina was completely ignored, I will throw in the fact that they have evidence that Welsh was once spoken in Beverly in East Yorkshire. Although I stand by the education board in Yorkshire's decision to not make it compulsory until GCSE!
If you look at the similarity in Breton, Gaelic (now I'm going to look ignorant as I don't know what is Scottish and what is Irish, sorry
) Cornish and Welsh you see what the original language of our country (Britain) was. It's just various invaders pushed the indigenous population to the edges. The Celtic languages are all of our cultural heritage. It's quite amazing that they still exist.
Well that was a long post that succeeded in proving nothing, just the stream of conciousness that has been in my brain since last night, oh and when I told DS' that people on the internet said Wales was not a country they were 
My eldest son is SN and he has had no problem becoming bilingual, he has a beautiful way with words in English and Welsh. There are studys that show being bilingual from an early age helps not only with other languages but with maths, it all down to how brain pathways are laid down in the early years.
That said, I don't agree with making Welsh compulsory until GSCE in all schools, it's obvious to me (and the stroppy teenager I was) that forcing people into anything will instil the sort of dislike that is so obvious in this thread.
DH has just come in and said 'Tell them maybe the reason some people are so resentful of your comments are that English people have been trying to kill off the Welsh language and culture since the Tudor times and have only succeed in pissing everyone off'
Anyway, now I'm watching a 'comedian' on tele taking the piss out of everything Yorkshire, I think he may be from Lancashire! I may have to go and start a thread about people slagging off my home country. ( and yes Yorkshire is a country, there have been serious musings about getting an assembly in a similar way to Wales and Scotland!)