The union of such archipresbyterates formed an archidiaconate, whose deans were subject to the archdeacon.    From Wordnik.com.  [The Catholic Encyclopedia, Volume 1: Aachen-Assize] Reference

He was, however, subject to the archdeacon; several such large rural communities, or parishes, constituted an archidiaconate.    From Wordnik.com.  [The Catholic Encyclopedia, Volume 1: Aachen-Assize] Reference

(Kirkevaag) was made the seat of a diocese (diœcesis Orcadensis), in connexion with which a cathedra! chapter was later established, and the Shetland Islands were assigned it as an archidiaconate.    From Wordnik.com.  [The Catholic Encyclopedia, Volume 11: New Mexico-Philip] Reference