Lutetia (sometimes Lutetia Parisiorum or Lukotekia before, in French Lutèce) was a town in pre-Roman and Roman Gaul. The Gallo-Roman city was a forerunner of the re-established Merovingian town that's the ancestor of present-day Paris. Lutetia and Paris have little in common save their position where an island, the Île de la Cité, created a convenient ford of the Seine. The primitive Lukotekia (Strabon, Ptolemeus) > Lutetia (Caesar) maybe contains the Celtic root *luco-t- 'mouse'… (More on Lutetia)