Walter Annenberg was an American publisher and philanthropist, best known for founding the Triangle Publications and serving as the U.S. Ambassador to Great Britain from 1969 to 1974. He was a significant figure in the media industry and made substantial contributions to education and the arts through his charitable foundations. Leonore Annenberg, Walter's wife, was also a prominent philanthropist and served as the president of the Annenberg Foundation. She was dedicated to various causes, including education, the arts, and health, and played a crucial role in continuing her husband's legacy of giving after his passing in 2002.