Iwakura Mission
Lanman married Adeline Dodge in 1849; they had no children. They raised Tsuda Ume (December 31, 1864 – August 16, 1929) from December 1871 to 1882. Ume had been sent by the Japanese government as part of the Iwakura Mission; one of its goals was to study educational systems in the U.S. Ume later founded Tsuda College for women in Tokyo.