The Brontes and Currer, Acton, and Ellis Bell (1816-1855)
George Sand and Aurore Dupin (1804-1876)
George Eliot and Marian Evans (1819-1880)
Lewis Carroll and Charles Dodgson (1832-1898)
Mark Twain and Samuel Clemens (1835-1910)
O. Henry and William Sydney Porter (1862-1910)
Fernando Pessoa and his heteronyms (1888-1935)
George Orwell and Eric Blair (1903-1950)
Isak Dinesen and Karen Blixen (1885-1962)
Sylvia Plath and Victoria Lucas (1932-1963)
Henry Green and Henry Yorke (1905-1973)
Romain Gary and Emile Ajar (1914-1980)
James Tiptree, Jr. and Alice Sheldon (1915-1987)
Georges Simenon and Christian Brulls, et al. (1903-1989)
Patricia Highsmith and Claire Morgan (1921-1995)
Pauline Reage and Anne Desclos (1907-1998).