The Irish Gringo

The Irish Gringo, a gunfighter from south of the border who is half Mexican and half Irish, comes upon a small girl who happens to be wearing a shirt with the map of a lost mine written on it. It turns out her grandfather was murdered by a gang looking for the mine, and now they're after her. The gunman and his companions set out to protect the girl from the murderous gang and reclaim what is now her mine.