Welsh alphabet. Note that there is no J, K, Q, V, X or Z. However the most common surname in Wales is Jones, and there is a little village called Vivod. And if you find this interesting, just do a search for the definition of a Welsh Mile.
The Welsh God DEWI - Most People do not realize that the Welsh Dragon actually is an ancient Welsh God The Red Dragon of wales Derived from the Pagan God, Dewi. Dewi, whose crimson form was said to have appeared in King Arthur's dreams, has been depicted on the Welsh banner since at least the departure of the Roman legions, is the official emblem of Wales, and was derived from the Great Red Serpent that once represented Dewi. (Read more in th comments below.)
Y Ddraig Goch (Welsh Dragon). The Romans used the dragon as one of their symbols of power. Into battle they would carry a metal head of a dragon in which they would light a fire. This would burn fiercely in the wind and seems to be where all the legends of fire breathing dragons come from. When the Romans left Britain it seems that the dragon was adopted by others as their symbol of power. Hence the Welsh Dragon of today.