Etymology
From Middle English arcedekne, archdecon, archdekne, archdekyn, archedeken, archedekyn, archedyacun, archideken, archidiacon, ardekne, ercedekene, ercedekne, erchdekene, erchedekene, erchedekne, erresdeken, ersedekne, ersedekyn, from Old English ærcedæcne, ærcediæcne, earcedæcne (from Late Latin archidiāconus) and Old French arc(h)ediacne.