for which work is the above mentioned author is famous?
He is famous as the author of the high fantasy works "The Hobbit" and "The Lord of the Rings"
J. R. R. Tolkien
John Ronald Reuel Tolkien (; 3 January 1892 – 2 September 1973) was an English writer, poet, philologist, and academic, best known as the author of the high fantasy works "The Hobbit" and "The Lord of the Rings".

who is the elf in the lord of the rings They are a fictional race inhabiting Middle-earth in the remote past. Unlike Men and Dwarves, Elves are immortal from where did it get its name? Tolkien derived his Elves from mentions in the ancient poetry and languages of Northern Europe, especially Old English what kind of english is the above mentioned english? It is the earliest recorded form of the English language, spoken in England and southern and eastern Scotland in the early Middle Ages did any other languages influence it? Yes, languages like Latin, Old Norse, Old French influenced it how is "beowulf" related to it? This is a poem of some 3,000 lines and the single greatest work of Old English mention a few pieces of literature written in such form of english language? "Beowulf", "Anglo-Saxon Chronicle", the Franks Casket,  Cædmon's Hymn are some of them what is the first literature about? The protagonist Beowulf, a hero of the Geats, comes to the aid of Hrothgar, king of the Danes, whose great hall, Heorot, is plagued by the monster Grendel. Beowulf kills Grendel with his bare hands and Grendel's mother with a giant's sword that he found in her lair are there any issues with its oral tradition? Yes, the question of whether "Beowulf" was passed down through oral tradition prior to its present manuscript form has been the subject of much debate, and involves more than simply the issue of its composition describe some criticism it received? The history of modern "Beowulf" criticism is often said to begin with J. R. R. Tolkien, author and Merton professor of Anglo-Saxon at University of Oxford, who in his 1936 lecture to the British Academy criticised his contemporaries' excessive interest in its historical implications
wiki:7753540
J. R. R. Tolkien [SEP] Introduction
Tolkien was appointed a Commander of the Order of the British Empire by Queen Elizabeth II on 28 March 1972. After Tolkien's death, his son Christopher published a series of works based on his father's extensive notes and unpublished manuscripts, including "The Silmarillion". These, together with "The Hobbit" and "The Lord of the Rings", form a connected body of tales, poems, fictional histories, invented languages, and literary essays about a fantasy world called Arda and Middle-earth within it. Between 1951 and 1955, Tolkien applied the term "legendarium" to the larger part of these writings.