Juliana Koo

Juliana Koo (formerly Young; née Yen; September 26, 1905 – May 24, 2017) was a Chinese-American diplomat. She served as first head of the United Nations Protocol Department. She was a supercentenarian and after emigrating to the United States, she became the third wife of diplomat and politician Wellington Koo.
Koo died on May 24, 2017 in New York City, aged 111.