did he write anything about european mythology?
No, but, Tolkien was an author of academic literary criticism and his eminal 1936 lecture, later published as an article, revolutionized the treatment of the Anglo-Saxon epic "Beowulf" by literary critics.
J. R. R. Tolkien
In addition to writing fiction, Tolkien was an author of academic literary criticism. His seminal 1936 lecture, later published as an article, revolutionized the treatment of the Anglo-Saxon epic "Beowulf" by literary critics. The essay remains highly influential in the study of Old English literature to this day. "Beowulf" is one of the most significant influences upon Tolkien's later fiction, with major details of both "The Hobbit" and "The Lord of the Rings" being adapted from the poem.
what's the ring called in lord of the rings The "One Ring" what is its purpose? The One Ring is a central plot element in "The Lord of the Rings", it is a magic ring that grants the wearer invisibility what does it look like? The Ring seemed to be made simply of gold who are some of the ring bearers? The hobbits Bilbo, Frodo, and Sam who are they? They are the hobbits what does that mean? Hobbits or Halflings are a fictional human-like race in the novels of J. R. R. Tolkien, about half the height of humans. which novels has the author penned? "Sketch of the Mythology",  "The Hobbit" and "The Lord of the Rings" from where did the second ring bearer get its name? Frodo's name comes from the Old English name "Fróda", meaning "wise by experience". who are his ancestors? UNANSWERABLE what sort of character is he? Frodo's character as combining "courage, selflessness, and fidelity" did the author of these book fight in any war? Yes, First World War what were his views regarding communism? He was anti-communist and regarding nazism? Tolkien vocally opposed Adolf Hitler and the Nazi Party before the Second World War, and despised Nazi racist and anti-semitic ideology. what were his thoughts about race? He lamented the treatment of native Africans by whites in his native South Africa.
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J. R. R. Tolkien [SEP] ""Beowulf": The Monsters and the Critics"
In addition to writing fiction, Tolkien was an author of academic literary criticism. His seminal 1936 lecture, later published as an article, revolutionized the treatment of the Anglo-Saxon epic "Beowulf" by literary critics. The essay remains highly influential in the study of Old English literature to this day. "Beowulf" is one of the most significant influences upon Tolkien's later fiction, with major details of both "The Hobbit" and "The Lord of the Rings" being adapted from the poem.