Brother of Maria Shriver, Tim Shriver, Mark Shriver and Anthony Shriver.
Son of producer Eunice Kennedy Shriver (founder of the Special Olympics) and Sargent Shriver (former head of the Peace Corps and Vice-Presidential running mate to George McGovern during the 1972 presidential elections).
Grandson of Joseph P. Kennedy and Rose Kennedy.
Nephew of John F. Kennedy, Robert F. Kennedy, Ted Kennedy, Rosemary Kennedy, Patricia Kennedy and Jean Kennedy Smith.
Cousin of John Kennedy Jr., Caroline Kennedy, Christopher Lawford, Kerry Kennedy and Rory Kennedy.
Brother-in-law of actor Arnold Schwarzenegger.
Father of Rosemary Scarlett Shriver (born January 8, 2009).
Uncle of Katherine Schwarzenegger, Patrick Schwarzenegger, Christina Schwarzenegger and Christopher Schwarzenegger.
Dated Sondra Locke, 10 years his senior.