No, this doesn't have all the much to do with Deleuze and Guattari, does
it? Still, I was into this kind of stuff once (and wrote an essay
on the body without organs in the medieval moralities).
I think there was a special issue of _Speculum_ on this kind of thing,
>from where I pull the following reference:
Lee Patterson, "On the Margin: Postmodernism, Ironic History, and
Medieval Studies." Speculum 65 (1990): 87-108.
Most of these people are more indebted to the French _Annales_ school (Le
Goff etc.) than anything else. Some other names to throw in the pot
include David Aers (whose book on Chaucer I'd avoid, but who's written
some other more interesting stuff, and edited a number of collections),
Sarah Beckwith, Miri Rubin, Caroline Walker Bynum...
I've always wondered about an _Annales_-D&G correspondence (not in terms
of influence, however), especially given how many Deleuzoguattarians
(Manuel de Landa, for instance) are fans of Braudel. So perhaps there's
something here after all...