Nancy was born on August 28, 1944, in Washington, D.C. She was the daughter of the late James and Katherine Cullen of Vienna, VA, where she grew up. Nancy was a longtime resident of Loudoun County, having lived in Leesburg, Hamilton and most recently Lucketts. Nancy graduated from James Madison High School's Class of 1963.

Nancy worked for Giant, Contel Phone Company, many local retail stores (Fashion Bug, Peebles, Cato, West Point Stevens, Clarks), and most recently retired from her position as a LCPS bus attendant in 2013 where she enjoyed working with special needs students.

Nancy was a devoted wife, mother and grandmother who had many interests including crocheting, knitting and sewing. She was a former member of the Leesburg Lioness Club and served as their President from 1992-1994. She enjoyed children and loved spending time with her daughter and grandchildren.

Nancy is survived by her beloved spouse, Carroll Peacock, of 35 years; a daughter, Lynn Mercer, and husband, Mike Mercer; a granddaughter, Shelby Glenn (Mercer), and wife, Katie; and a grandson, Dylan Mercer, and fiancé, Megan Constantinides. Nancy was predeceased by her sister, Phyllis E. Wood, and in-laws, Arthur and Mae Peacock.