Andvir was named as the son of Androg. He was one of the only man to escape from Amon Rûdh after the massacre of Turin's Outlaws, after Mîm's betrayal as depicted in The Silmarillion and The Children of Húrin.
Note
Andvír was not mentioned in either the The Silmarillion and The Children of Húrin and was only mentioned in an introductory note not in those published books.