Possible Clues:

• Diocesan church
• 9 across are attached to the 21 across he had at first
• Animal doctor interrupts cure in place of worship
• Scene of dramatic homicide
• Principal 2 down of diocese
• Animal doctor dissecting 20 in Canterbury, say
• St. Patrick's, e.g.
• Where you'll find bishop had claret for a change
• Building fat up - first ounce perhaps he's put on
• Head church of diocese