Yamashita Yoshitsugu (山下 義韶, 16 February 1865 – 26 October 1935, also known as Yamashita Yoshiaki), was the first person to have been awarded 10th degree red belt (jūdan) rank in Kodokan judo. He was also a pioneer of judo in the United States.
Read more about Yamashita Yoshiaki: Early Years, The Four Guardians of Kōdōkan, Introducing Judo To America, Later Life, Video Footage