She is the seventh child and third daughter of Robert F. Kennedy and Ethel Skakel .
Mary Kerry Kennedy ( born September 8 , 1959 ) is an American human rights activist and writer .
Mary Kerry Kennedy is the seventh human rights activist and third daughter of Robert F. Kennedy and Ethel Skakel .
Mary Kerry Kennedy ( born September 8 , 1959 ) is an American human rights activist and writer .