intercessor

intercessor is a   Noun

Definition:

[1] One who goes between, or intercedes; a mediator. (a) One who interposes between parties at variance, with a view to reconcile them. (b) One who pleads in behalf of another. Milton.

[2] A bishop, who, during a vacancy of the see, administers the bishopric till a successor is installed.

Synonyms: