On Sunday, Pope Francis canonised two spiritual giants of the 20th century. From now on, St Paul VI and St Oscar Romero will always be connected in the Catholic imagination. But do the two saints share anything more than a canonisation date?

Their biographies are strikingly different. Paul VI was a consummate Vatican insider who served for more than 30 years in the Secretariat of State before leading the vast Archdiocese of Milan. Romero grew up in small-town El Salvador and trained as a carpenter before discerning a vocation to the priesthood.