You probably do, but in ocarina of time, the hylian shield has another triforce...
See, below the bird. not only that but the bird represents the loftwing, and as confirmed by a dude who worked to make skyward sword, loftwings represent the seperation between sky and surface, Demise was sealed in the surface. and the triforce is located in the sky. could this mean Demise is the fourth goddess?! (or god)