Blending theory accommodates more complex mappings than the source-target projections of the Lakoff-Johnson theory of metaphor. It can resolve a number of traditional puzzles about allegory, while preserving critical insights and supporting them with a sophisticated linguistics. I examine Prudentius's Psychomachia to show how prototypical allegories use organizing metaphors but exhibit blending operations. I suggest that from a latent existence in language, allegory arises as an imagined scene, then expands to narratives. This can illuminate how blends get elaborated. I explore the nature of variant forms of allegory in blending terms, looking closely at Kafka's Trial. [M.S.]