Calamina, Madras, India (Google Maps ⧉, OpenStreetMap ⧉)
Referenced In
The Travels of Marco Polo
by Marco Polo, da Pisa Rusticiano"The Roman Martyrology calls the city of Martyrdom Calamina, but there is (I think) a fair presumption that the spot alluded to by Gregory of Tours was Mailapúr."