I am so sorry to hear that Myrddin, especially when you made such an effort. Remember, the vast majority of Welsh people do not speak Welsh either.
Don’t let the small-minded nationalists get you down. Like many left-wingers they are full of sound and fury and do not represent us all, but like to think they do.
If you ever return to Wales and stray into the Gwent/Monmouthshire area, I’d be delighted to show you an example of the hospitality of the Welsh (I work at a large historic property).
Keep that dragon’s fire burning!