Baron Yamakawa Kenjirō (山川 健次郎; 9 September 1854 – 26 June 1931) was a Japanese samurai, politician, physicist, academic administrator, and author of several histories of the Boshin War. He served as president of Tokyo Imperial University, Kyushu Imperial University, and Kyoto Imperial University. He also served as a Privy Councilor and a member of the House of Peers. Though his name is commonly written "Yamakawa," he himself wrote it as "Yamagawa" in English.
Source: “Yamakawa Kenjirō”, English Wikipedia (CC BY-SA 4.0), excerpt