Complex sentence: He made contact with the Baptist, Rev. John Ryland Jr., who became most interested in securing funds from British donors to meet such demand for missionary work, and was moved to helped instigate the non-denominational London Missionary Society to help provide for this.
Split into simpler sentences: He made contact with the Baptist, Rev. John Ryland Jr., who became interested in securing funds from British donors to meet such demand for missionary work. He was moved to helped instigate the non-denominational London Missionary Society to help provide for this.