In the Tale of The Fall of Gondolin are two of the greatest powers in the world. There is Morgoth of the uttermost evil, unseen in this story but ruling over a vast military power from his fortress of Angband. Deeply opposed to Morgoth is Ulmo, second in might only to Manwë, chief of the Valar.
J.R.R.Tolkien (1892-1973) was a distinguished academic, though he is best known for writing The Hobbit, The Lord of the Rings and The Silmarillion, plus other stories and essays. His books have been translated into over 80 languages and have sold many millions of copies worldwide.