Tricia Nixon Cox became the First Daughter when her father became the President of the United States. Tricia played an important role in the White House and also participated in her father's election campaign. She was known for her humble and quiet nature. She later married Edward Finch Cox and retired from public life. She is now associated with several medical institutions and the Richard Nixon Foundation. Tricia played her role with simplicity and intelligence, making her a special First Daughter.