Patricia Nixon Cox (née Nixon; born February 21, 1946) is the elder daughter of the 37th United States president Richard Nixon and First Lady Pat Nixon, and sister to Julie Nixon Eisenhower. She is married to Edward F. Cox and is the mother of Christopher Nixon Cox. In her father's public career, Cox performed a ceremonial role, in contrast to Julie's more political involvement. She accompanied him on many campaign stops and, after his inauguration, on state trips around the world.