Natsu and Happy make a pilgrimage to Tenroujima, site of Mavis Vermillion's grave. This sets the stage for the origin story of Fairy Tail, with a six-year-old Mavis caught in the middle of a bloody war between two guilds on the island.
If this is where her grave is, 
maybe the founder was also born here.
إن كان ضريحها هنا، ربّما وُلدت المؤسِّسة هنا أيضًا