Londonderry (also Derry) is city in the United Kingdom.
In 1932, during a journey across the Atlantic Ocean, Amelia Earhart was forced to land her plane in Londonderry after she drifted off course. (VOY novelization: Flashback)
In 2369, an alien posing as Rumpelstiltskin claimed a farmer in Derry had tried to chase him off until Rumpelstiltskin had saved his crops from locusts. (DS9 episode: "If Wishes Were Horses")