is the character referred in any literature?
Yes, in "The Tale of Aragorn and Arwen".
Literature
As told in "The Tale of Aragorn and Arwen", Aragorn in his twentieth year met Arwen for the first time in Rivendell, where he lived under Elrond's protection. 
arwen's dad in lord of the rings Her father was Elrond half-elven, a descendant of the Man Tuor. what is an elven? UNANSWERABLE who created the aforementioned character? J. R. R. Tolkien are there any other names of the character? UNANSWERABLE
Yes, "The Tale of Aragorn and Arwen" Yes, "The Tale of Aragorn and Arwen" Yes, in the novel "The Lord of the Rings".
Arwen Arwen Arwen
Literature Literature Introduction
As told in "The Tale of Aragorn and Arwen", Aragorn in his twentieth year met Arwen for the first time in Rivendell, where he lived under Elrond's protection.  "The Tale of Aragorn and Arwen", Arwen Undómiel is a fictional character in J. R. R. Tolkien's Middle-earth legendarium. She appears in the novel "The Lord of the Rings". 
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Arwen [SEP] Literature
Arwen was the youngest child of Elrond and Celebrían. Her elder brothers were the twins Elladan and Elrohir. Her name ""Ar-wen"" means 'noble maiden' in Sindarin. She bore the soubriquet "Evenstar" (Evening Star), as the most beautiful of the last generation of High Elves in Middle-earth. As told in "The Tale of Aragorn and Arwen", Aragorn in his twentieth year met Arwen for the first time in Rivendell, where he lived under Elrond's protection. Arwen, then over 2,700 years old, had recently returned to her father's home after living with her grandmother, the elf-queen Galadriel in Lothlórien. Aragorn fell in love with Arwen at first sight.