Since then, Primaldo and his townsfolk, who chose to die rather than betray their Catholic faith, have been hailed as martyrs. Their bones and skulls – proudly on display behind glass walls in the Cathedral of Otranto – are well-known Catholic relics and a popular pilgrimage destination.
But the choice to highlight their sacrifice may put a strain on the already fragile relationship between the Catholic Church and Islam.

Ever since his election, Pope Francis has called for greater dialogue between Christianity and other religions, in particular Islam. And so far, he has acted on that promise. He washed the feet of a young Muslim woman jailed in a juvenile prison on Ash Wednesday, and reached out to the many “Muslim brothers and sisters” during his first Good Friday procession.

So why risk creating yet another inter-faith row with a celebration which some in the Muslim world may be seen as a provocation?

The answer is that it wasn’t Pope Francis’ choice in the first place. The decision to canonize the hundreds of Otranto martyrs was rubber-stamped by his predecessor, Pope Benedict XVI, on Feb. 11 – the same day he announced his resignation.