User blog comment:FairyRaven/Fairy Tail Chapter 465: 400 Years, Review and Commentary/@comment-1776824-20151210223302

So upon the release of Crunchyroll's chapter, here is some information for all you people who think Anna is someone super important, like someone who went to the future with the Slayers, or maybe even Lucy or Layla themselves. I personally love their translations, as they are much more clear and concise when compared to Mangastream and Mangapanda.

"We simply told Anna's clan of our plan, and they passed the knowledge down through generations of their family until such an age was at hand. The door was opened by the Celestial Wizard Layla in the present era."

There you all have it. Anna is Lucy and Layla's ancestor; they are the direct descendants of Anna and her clan, and Layla was following the directions passed down through the ages, which was to open the Eclipse Gate when Ethernano concentration was exceedingly high.