Spoiler Warning for Skyward Sword and Twilight Princess!
Throughout Skyward Sword, Link finds three god-like dragons who help him on his quest by each giving him one fourth of a magic song (the final fourth is given by another dragon who is the apparent leader of the three). Seems all fine and good, but since is the supposed first game in the series chronologically, that means that there are four unaccounted for dragons in all other Zelda games. But still, wasn't one dragon unaccounted for in
SS already? The dragon Lanayru was dead long before the events in
SS, and can only be revived by use of a Timeshift Stone. But even after a Life Fruit has been given to him, "supposedly" curing him, he still will return to his skeletal form if the Timeshift Stone is deactivated, which means that between the time of the first demon war and the present day, Lanayru either was killed or died of old age. Whatever the reason, Lanayru is a skeletal dragon at the end of
SS, and he is never heard of again.
Or is he?
In Twilight Princess, Link fights a possessed skeletal boss named Stallord in the Arbiter's Grounds, desert locale very similar to Skyward Sword's Lanayru Desert. It seems not only possible but probable that Lanayru the Thunder Dragon is Stallord, and that the Lanayru Desert is Twilight Princess's Gerudo Desert. But is there something that I'm missing; perhaps some temporal complications that make this impossible? I would love to be proven wrong, so as to continue to build upon this theory.