Killough is a surname of Irish or Scottish origin. Notable people named Killough include the following:
Ann Killough (born 1947), American poet Beth Killough Chapman (born 1962), American politician Clint Killough (born 1993), American football coach Lee Killough (born 1942), American novelist Lucy Winsor Killough (1897–1989), American economist Peter Killough (born 1960), American lawyer Stephen Killough, designer of the Killough platform
See also Killough, an Irish village, site of Killough railway station The Killough massacre, a violent incident in 1838 Texas Killough Lewisville High School North, a school in Denton County, Texas Kellock, a surname of similar origin and sound
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