Robert Foster was born in Brooklyn, New York in 1949. As a teenager, he discovered The Lord of the Rings in his public library, and was an original member of the Tolkien Society of America. Foster's interest in etymology led him to compile a glossary of every name, place, object and event that appears in The Hobbit and The Lord of the Rings, which in 1966 appeared in the Tolkien fanzine, Niekas.