You know, rereading the references page again, I just realized some fun things.
ネイリング is romanized as "Nairing," but it actually was supposed to read "N?gling," the sword given to Beowulf by the Hro?gar after the defeat of Grendel's mother. Incidentally, the reference page states that Beowulf used N?gling in the fight against the dragon. I don't actually remember if this was the case, as it's literally been years since I last read the epic. Hmm.
オートクレール, romanized "Ootokureeru," is the "Hauteclere," the sword of knight Olivier in The Song of Roland. The references page, for some reason, likens the Hauteclere to the Alondite. I'm not even so sure how The Song of Roland relates to Arthurian myth, anyway.
マイトスタッフ, a really early staff weapon that grant a lot of ATK for the time you could get it, is the Might Staff. It's very much based on the RO weapon of the same name, which granted an insanely high ATK boost but forced all your attacks to use 1 SP.
オーガーキラー and ルーンアクス, "Ogre Killer" and "Rune Axe" respectively, are tagged as "Same name as an FF weapon?" In fact, the former, Ogre Killer, is the Ogre Axe weapon found in the original SaGa games, whereas the Rune Axe is a commonplace Square weapon, found both in some FF games and some SaGa games.
シウコアトル is romanized "Shiukoatoru," which can be loosely translated to "Xiuhcoatl," the spiritual form of the Aztec deity of fire, Xiuhtecuhtli. It was a serpentine dragon that is commonly titled the "Turquoise Serpent."
屠殺者, or "Slaughterer," was a title bestowed to the spear Areadbhar, which in turn was the name given to the spear of Lugh's, "Gae Assal," in a certain narrative. The spear itself was taken from the Persian King Pisear.
Lots of enemy references, too.
There's an enemy named Medea (メディア), though one might think this was based on Greek mythology, it's actually based on Fate/stay night's Caster, whose true name was Medea.
There are Oliphaunts and Ents that show up as encounters too. Obviously, they were drawn from Tolkien's Lord of the Rings.
Lots of enemy graphics were inspired from Gegege Kitarou, too. The "Master" (達人) enemy is based off Haborym from Tactics Ogre, and just like him, it uses petrification attacks. Hell's Guard was inspired from three things: Pet Shop from JJBA, Horus the Black Flame Dragon from the YGO card game and also Compulsory Evacuation Device also from the YGO card game.
...And a shitton of skill references too, I'm not surprised!
