Walter Rosenberry was born in St. Paul, Minnesota in 1931, attended the Taft School in Watertown, Connecticut and received an A.B. degree from Harvard University, magna cum laude, in 1953. Rosenberry taught English and history at the Kent School from 1959-1981. In addition to his career in teaching, Rosenberry was known for his community service and philanthropy. He was president of the Laura Musser Foundation and the Walter S. Rosenberry III Charitable Foundation. In 2001 the Walter S. Rosenberry III Cumbres Scholarship began to provide scholarships for Hispanic teacher candidates accepted into the Cumbres teacher training program.
Walter Rosenberry died at his home in Denver on October 11, 2005. Devoted husband, parent, teacher, mentor, philanthropist, he will be greatly missed by the thousands of Coloradoans who directly benefited from the time, leadership, and financial support he offered countless non-profit organizations.