Elwood G. Tewksbury was a missionary and college teacher in China. He and his wife and two sons were besieged in the British legation during the Boxer Rebellion. One of Elwood's sons was Donald George Tewksbury (b. 1894), who later became a professor of Comparative Education at Teachers College, Columbia University. Elwood's other son, Malcom Gardner Tewksbury, authored two textbooks on speaking Chinese.
From the description of Elwood G. and Donald G. Tewksbury papers, 1890-1959 (bulk 1890-1907, 1949-1959). (Columbia University In the City of New York). WorldCat record id: 163581775