During the 19th century, several American Baptist missionaries evangelised in the northeastern parts of India. In 1876, Dr. E. W. Clark first went to live in a Naga village, four years after his Assamese helper, Godhula, baptised the first Naga converts. Rev. and Mrs. A.F. Merrill arrived in India in 1928 and worked in the southeast section of the Garo Hills. Rev. and Mrs. M.J. Chance spent most of the years between 1950–1956 at Golaghat working with the Naga and Garo tribes. Even today the heaviest concentrations of Christians in India continue to be in the Northeast among the Nagas, Khasis, Kukis, and Mizos. Jehovah's Witnesses began their activity in India in the year 1905 when an Indian returned home after spending some time in Bible study with Charles Taze Russell.