The Irish surname O'Shaughnessy is an anglicized form of the Gaelic name Ó Seachnasaigh meaning “descendant of Seachnasach,” a personal name derived from seachnach meaning “elusive.” The name is found primarily in County Galway and County Limerick. The town of Gort, County Galway, was the main residence of the family since at least the time of their ancestor, King Guaire Aidne mac Colmáin of the Ui Fiachrach Aidhne dynasty. Up until the late 17th century the Ó Seachnasaigh's held the sub district of Uí Fiachrach Aidhne known as Cinéal nAedha na hEchtghe meaning "kindred of Aedh of the Slieve Aughty", which was also their clan name. Cinéal nAedha na hEchtghe / Kinelea consisted roughly of the civil parishes of Beagh, Kilmacduagh and Kiltartan and also parts of the civil parishes of Kibeacanty and Kilthomas. Today there are more than 3,000 people with the family name O'Shaughnessy living in The United States.