Theodore Roosevelt Jr. was the 26th president of the United States, serving from 1901 to 1909. Previously serving for six months as vice president under William McKinley, Roosevelt became president after McKinley's assassination in 1901. He was 42 years old upon his first inauguration, making him the youngest person to hold the office. The Nobel Peace Prize 1906, announced December 10, 1906. Theodore Roosevelt, “for his role in bringing to an end the bloody war recently waged between two of the world's great powers, Japan and Russia”. Theodore Roosevelt: born 1858, New York, NY, USA. Wiki link Data: the Nobel Foundation (CC0).