End of June, early July 1920: 252 Anglican bishops from around the world converge to London. I travel the yellowish pages of the list of dioceses they represent: Zanzibar, Nagpur, Zululand, Adelaide, Argentina, Polynesia, Singapore, Bombay, Southern Brazil, Mombassa, Antigua, Tokyo. They are gathering for a conference called “Lambeth,” from the name of London residence of the Archbishop of Canterbury, then Randall Davidson, whom they recognise as spiritual leader.