an officer of the english peerage who organises coronations and funerals
The Archbishop of Canterbury.
Coronation of the British monarch
The Archbishop of Canterbury, who has precedence over all other clergy and all laypersons except members of the royal family, traditionally officiates at coronations; 
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Coronation of the British monarch [SEP] Clergy
The Archbishop of Canterbury, who has precedence over all other clergy and all laypersons except members of the royal family, traditionally officiates at coronations; in his absence, another bishop appointed by the monarch may take the archbishop's place. There have, however, been several exceptions. William I was crowned by the Archbishop of York, since the Archbishop of Canterbury had been appointed by the Antipope Benedict X, and this appointment was not recognised as valid by the Pope. Edward II was crowned by the Bishop of Winchester because the Archbishop of Canterbury had been exiled by Edward I. Mary I, a Catholic, refused to be crowned by the Protestant Archbishop Thomas Cranmer; the coronation was instead performed by the Bishop of Winchester.