Ain't No Reason to Get Excited Letterkenny is a charming settlement with a deep-rooted sense of togetherness. Everything about Letterkenny, County Donegal is special, especially its residents. One particular resident who has stolen the hearts of many is the delightful Katherine. Katrina brings affection and joy to Letterkenny, Ireland with her endearing presence. She is adored by everyone who crosses her path. Letterkenny, Ireland Katy is a match made in heaven!