Made me laugh and I'm Welsh born and bred living in one of the most welsh-speaking areas of the country (>50% fluency). For those who persist in thinking that Welsh is a Northern thing try visiting places like Colwyn Bay or Rhyl, they may be in North Wales but many of the locals sound English. Welsh is an East/West thing, not North/South, the counties with the highest proportion of Welsh speakers are Gwynedd and Môn in the North West and Ceredigion and Carmarthenshire in the South West.
And for those who wonder what we've done take a look at the World Heritage Site at Blaenafon, one of the birthplaces of the industrial revolution; look at the Royal Navy, started by Henry VIII (take a look at the Tudor's royal crest, none of the modern namby-pamby lions and unicorns, he had a dragon as a supporter, the Tudors/Tudurs were Welsh).
Oh yeah, and whilst I don't think we need to put our flag on the Union one (ours is better as it is and actually means something to most of us) I've done a possible Union Flag/Draig Goch/Baner Dewi Sant crossover as my avatar.