Original: Patricia '' Tricia '' Nixon Cox ( born February 21 , 1946 , in Whittier , California ) is the first daughter of the 37th U.S. president Richard M. Nixon and his wife , Patricia Ryan Nixon .
Simplified: Patricia '' Tricia '' Nixon Cox was born on February 21 , 1946 in Whittier , California . She is the daughter of former US president Richard Nixon and Pat Nixon .