The Mystery of the Letter R in Fictional Writers' Names

J. R. R. Tolkien
J. K. Rowling
George R. R. Martin
R. A. Salvatore

The fantasy writers whose names start with r is one set which belongs to the set of fantasy writers who have more than one two names (more than one first or second name):

Marion Zimmer Bradley
Arthur C. Clarke
H. P. Lovecraft
Ursula K. LeGuin
C. S. Lewis
Philip K. Dick
Gabriel García Márquez


Which belongs to the set of writers who have more than two names:
E. E. Cummings
W. B. Yeats
D. H. Lawrence


There's fantasy in "R".