Cephalophore
A cephalophore (from the Greek for "head-carrier") is a saint who is generally depicted carrying their own head. In Christian art, this was usually meant to signify that the subject in question had been martyred by beheading. Handling the halo in this circumstance offers a unique challenge for the artist: some put the halo where the head used to be, others have the saint carrying the halo along with the head, and some split the difference.
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