(RNS1-mar21) With Prince Charles and Camilla the Duchess of Cornwall looking on, Justin Welby struck his pastoral staff three times on the door of the ancient Canterbury Cathedral, seeking admission to assume his throne in a ceremony that mixed age-old pageantry with contemporary praise and worship songs. For use with RNS-WELBY-ENTHRONE, transmitted on March 21, 2013, Photo courtesy Anglican Communion News Service/The Press Association.