In the past I've gone through the entire MM text dumps trying to find helpful clues that go beyond the Garo transgressions against the Ikana Kingdom, but came to no avail. The skull kids involvement with Termina's past may be skewed however.
If you recall Anju's grandmother telling the story of...
This is true based on what Evan says to Link's guise as Mikau.
Evan:
Mikau! How was it? Did you get the eggs back? Oh... you couldn't do it, after all.
Have you been to see Lulu out in back by the ocean? Ever since the pirates stole her eggs, she's just been standing out there gazing at the...