Wikipedia policy is to use the official name for the county. The name usage does not indicate an endorsement for either community's opinions.
^大多数爱尔兰民族主义者 use the name Derry, while Unionists often use Londonderry, the name specified on the city's Royal Charter.
Wikipedia policy is to use the name as designated by the elected council. The name usage does not indicate an endorsement for either community's opinions.