The Dean of (the) Arches is the judge who sits at the ecclesiastical court of the Archbishop of Canterbury in England. This appeal court is commonly called the Arches Court.
The Dean of Arches is a joint appointment of the Archbishop of Canterbury and the Archbishop of York; he serves the same role in the latter's Chancery Court where he or she has the title of Auditor. The Dean of Arches also acts as Master of the Faculties.
The current Dean of Arches is Charles George, QC, who succeeded the Right Worshipful Dr Sheila Cameron on 1 May 2009.
References
Dean of Arches Wikipedia(Text) CC BY-SA