After attending
Homerton College, then in Hampstead, Ellis was ordained in 1815. He married Mary Mercy Moor (born 16 October 1793) on 9 November 1815. He was soon posted to the
South Sea Islands with his wife, leaving England on 23 January 1816. They arrived at
Eimeo, one of the
Windward Islands, via Sydney, and learned the language there. His daughter Mary (1817–1837) was born. During their stay, several chiefs of nearby Pacific islands who had assisted
Pomare in regaining sovereignty of
Tahiti, visited Eimeo and welcomed the LMS missionaries (including John Orsmond and
John Williams and their wives) to their own islands. All three missionary families went to Huahine, arriving in June 1818, drawing crowds from neighbouring islands, including King Tamatoa of
Raiatea. They had four children, Mary (1817–1837), John Eimeo Ellis (born 1818), Elizabeth (1820–1858) and Ann Ellis (1821–1862). from his journal Ellis and a small group travelled from Tahiti on the
schooner Mermaid to the
Hawaiian Islands, known then as the Sandwich Islands. On the same voyage, another small schooner called
Prince Regent, outfitted with six cannons, was presented to King
Kamehameha II. The party arrived in
Honolulu on 16 April 1822. Although the plan had been to also visit the
Marquesas Islands, it returned to Tahiti on 27 August 1822. Ellis was invited to stay and he arranged for his family to come to Hawaii, where they arrived on the
Active on 4 February 1823. In June 1823 Ellis joined the American Missionaries
Asa Thurston, Artemas Bishop, and Joseph Goodrich on a tour of the island of
Hawaii, to investigate suitable sites for mission stations. On the way he stopped at
Maui and met and baptized Queen
Keōpūolani. Their first stop was
Kailua-Kona, where they met the Governor of the island,
Kuakini, who was known as John Adams. Ellis and his party visited
Kealakekua Bay, and toured the historic sites nearby, such as the
Puuhonua o Hōnaunau. They travelled south past the
Mauna Loa volcano. They were some of the first Europeans to visit the caldera of the
Kīlauea volcano, which was active at the time. On the eastern side they visited Hilo and
Waipio Valley, and some of the party continued up snow-covered
Mauna Kea. Some of the important missions set up as a result of this trip include
Mokuaikaua Church,
Imiola Church,
Kealakekua Church, and the
Haili Church. Returning to Honolulu, Ellis set about learning the
Hawaiian language. He transcribed the language into a Roman alphabet and helped set up a printing press. ==In England==