Henry dolling,
I think Bathia was calling for "Silas!", eighteenth century Collinsport pizza delivery boy. (His story was written by the same author as "Johnny Tremaine," only Thayer David played the Sebastian Cabot role.)
After all, exorcism is hungry work, especially when those darned demons keep spitting pre-digested pea soup in your face.
Looking forward to your next wonderful post!
Gothick