Reg

Reg is an English short form of Reginald, which itself derives from the Old High German name Raginald, composed of the elements ragin, meaning counsel, and wald, meaning ruler. The name was brought to England by the Normans and became well established throughout the medieval period. Reg gained independent use as a given name in its own right, particularly in British English-speaking countries during the nineteenth and twentieth centuries. Related forms include Reggie, Rex, and the fuller Reginald.