Coadjutor

Then have the lady patronesses and their active coadjutors, whether noble or ignoble, all the work of beating up for recruits to go over again.

The mountaineer, with all his pulses aquiver, looked down into his coadjutor’s white, startled face.

Hitherto I have been but the witness, little more; and I should hardly think now to take another tone, that of your coadjutor, for the time, did I not perceive in you,—at the crisis too—a troubled hesitancy, proceeding, I doubt not, from the clash of military duty with moral scruple—scruple vitalized by compassion.

When old age rendered any Bishop unable to perform his duties, the first example of which occurs AD 211, when Alexander became coadjutor to Narcissus at Jerusalem

August then appointed Prince George III of Anhalt (who was both a theologian and a priest as well as a prince) to be his coadjutor in spiritual matters.