Lieutenant (later Lieutenant Commander) Theodorus Bailey Myers Mason was founder and first head of the United States Office of Naval Intelligence, with the post of Chief Intelligence Officer (prior to it being designated as Director of Naval Intelligence in 1911). From a distinguished New York family, he was son of Theodorus Bailey Myers, a lawyer and a Colonel in the United States Army during the Civil War. He took his name Mason from his maternal grandfather who had no heirs. Graduated from the United States Naval Academy in 1868, before travelling extensively with the US Navy. Married to Edmonia Taylor Phelps in 1875. Mason retired in 1894 and died 1899 in New York State.

Rev. Dr Ernest Edgar Vyvyan Collocott was a missionary and scholar born 7 June 1886 at Northcote, Melbourne, son of Victorian-born parents Alfred John Collocott, a Methodist minister who had recently returned from Fiji, and his wife Alice Jane, née Bickford. E.E.V. Collocate entered the Methodist ministry in 1911 and the same year went to Tonga as a missionary with his wife Edith Idabelle Bickford. In 1915, he became principal of Tupou College, Nuku'alofa. Collocott conducted his own research of the history and culture of Tonga and published as well as acting as an intermediary for other researchers. He is also known for his peace activism.

Archdeacon Gill, from a family of Pacific missionaries, joined the Anglican mission to Papua in 1908. Ordained at Dogura in 1910, and his first parish was at Boianai, where he remained until 1922. He moved to the Mamba district, where he established a temporary station at Manau on the mouth of the Mamba (or Mambare) River. Two years later he began work on Duvira (Maimba) Mission, which became his head station for 18 years. Duvira was destroyed by the Japanese in 1942. In 1943, he began building a new mission station at nearby Dewade. Retired in 1952, Gill died in England in 1954.

A missionary with the London Missionary Society in the Society Islands from 1861 to 1886. From May 1870, he was stationed on Tahiti, but made frequent visits to other islands.