(1) Robert Graham Irwin author of The Arabian Nightmare (b. 1946) is a British historian, novelist, and writer on Arabic literature. Editor for the Times Literary Supplement.
(2) Robert Irwin author of Tips and Traps When Buying a Home writes about real estate
(3) Robert Irwin author of art books (b. Sep 12, 1928) is an American Installation artist
(4) Robert Irwin Christian marriage/sex advice writer