What I meant was that in CLASSIC fantasy the "heroes" (a la would be PC's) were NOT casters. In Greek fantasy you had Circe and the like. Conan and the like had casters mainly as rare antagonists. Etc., etc.
Were Gwydion in Welsh mythology and Vainamoinen in the Kalevala protagonists?
Dying Earth was 1950 and counted as a fantasy novels by Locus.
Earthsea was 1964
Elric was 1961 (1e D&DG has him listed as multi-classed with Wizard)
Probably too late to be classic, but Dread Empire was 1979 and Black Company was 1984