Marietta Peabody Tree
Marietta Peabody Tree ( April 17 , 1917 – August 15 , 1991 ) was an American socialite and political supporter , who represented the United States on the United Nations Commission on Human Rights , appointed under the administration of John F . Kennedy . 
<triplet> Marietta Peabody Tree <subj> April 17, 1917 <obj> date of birth <subj> August 15, 1991 <obj> date of death