intercessor

noun

Etymology: Late 15th century, from Latin intercessor, from Latin intercēdō, from inter (“between”) + cēdō (“to go”) (English cede), literally “go-between”.

1. A person who intercedes; a mediator; one who reconciles enemies, or pleads for another.
2. A person who intercedes; a mediator; one who reconciles enemies, or pleads for another.

   “St Mary the Intercessor;   St Mary as intercessor”

3. A middleman, intermediary

   “Kings were revered, in many cases not merely as priests, that is, as intercessors between man and god, but as themselves gods”

4. A bishop who acts during a vacancy in a see.