Ireth
Myth Weaver
How about any of the following:
Robert E Howard - never read
Tanith Lee - never read, but recently got some of her stories (or I might be mixing her up with Tanya Huff?)
Thomas Burnett Swann - nope
Jack Vance - nope
Peter Beagle - yes!
Michael Moorcock - nope
Piers Anthony - yes!
Diana Wynne Jones - yes, a couple
Marion Zimmer Bradley - nope
Neil Gaiman - yes!