Micha
Chieftain
Ariks said:500AD is just about the time where the city name switched from Colonia Agrippina to Cologne due to the Frankish invasion. So for the Franks Cologne would be right IMO.
Yes, but it was NOT changed to "Cologne" but to "KÖLN".

I´m sorry for nitpicking but since all the gaelic names are in their native language, I guess the German ones should also be.