Coadjutor
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
An assistant, helper or ally; particularly a person appointed to assist a bishop who from age or Infirmity is unable to perform his duty.
Olcott v. Ga-bert, 86 Tex. 121, 23 S. W. 985.
Aiso an overseer, (coadjutor of an executor,) and one who disseises a person of land not to his own use, but to that of another.