Пьяцца Навона
The name of this church is unrelated to the ‘agony’ of the martyr: "in agone" was the ancient name of Piazza Navona ("piazza in agone"), and meant instead, from the Greek, ‘in the site of the competitions’, because Piazza Navona was built on the site of an ancient Roman stadium of the Greek model, with one flat end, and was used for footraces (Latin "agōn", "contest"). From ‘in agone’, the popular use and pronunciation changed the name into ‘Navona’, but other roads in the area kept the original name.