What did a niece of Cissy Houston became a United Nations Global Ambassador for?
Cissy Houston: Emily "Cissy" Houston (née Drinkard; born September 30, 1933) is an American soul and gospel singer. Cissy Houston:  Houston is the mother of singer Whitney Houston, grandmother of Whitney's daughter, Bobbi Kristina Brown, aunt of singers Dionne and Dee Dee Warwick, and a cousin of opera singer Leontyne Price. Dionne Warwick: Dionne Warwick ( ) (born Marie Dionne Warrick; December 12, 1940) is an American singer, actress and television show host, who became a United Nations Global Ambassador for the Food and Agriculture Organization, and a United States Ambassador of Health.
the Food and Agriculture Organization