The ancient oppidum that corresponds to the modern city of Paris was first mentioned in the mid-1st century BC by Julius Caesar as ''Luteciam Parisiorum'' ('Lutetia of the Parisii')'','' and is later attested as ''Parision'' in the 5th century AD, then as ''Paris'' in 1265. During the Roman period, it was commonly known as ''Lutetia'' or ''Lutecia'' in Latin, and as ''Leukotekía'' in Greek, which is interpreted as either stemming from the Celtic root ''*lukot-'' ('mouse'), or from *''luto-'' ('marsh, swamp'), depending on whether the Latin or Greek form is the closest to the original Gaulish name.