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 In August 1824 they had to return to England, as Mrs Ellis was in poor health, and so took a ship via America. Back in London, Ellis published his narrative of travels in Hawaii. He was selected as Assistant Foreign Secretary of the London Missionary Society in 1830 and its Chief Foreign Secretary in 1832, holding the office for seven years. His wife Mary, mother of four children, died on 11 January 1835. In 1836, Crocker & Brewster published a biography by her husband, Memoir of Mrs. Mary Mercy Ellis. Ellis remarried two years later to Sarah Stickney (1799–1872) on 23 May, the couple were unable to have a wedding trip as William's eldest daughter was ill, she died in June and was buried in Bunhill Fields burial-ground, next to her mother. She had been brought up a Quaker but latterly chosen to become an Independent or Congregationalist, as did many of those involved in the London Missionary Society, albeit a non-denominational one. She shared her husband's love of books and of writing. He had started to become a successful writer about the topography, history, botany, and ethnography of Polynesia since returning from the South Seas. Sarah Ellis gained her own success, primarily with books on women's role in society. Ellis's most important work was Polynesian Researches. This established him as a talented ethnographic and geographical writer, and was reviewed in the Quarterly Review by Robert Southey: "A more interesting book we have never perused." This and similar acclaim for Ellis's writing from others influenced investors to regard the missionaries more favourably, particularly the LMS missionaries. They had previously been portrayed as naively raising the expectations, educational level, liberty and status of slaves and native peoples, rather than taking a traditionally hard-headed approach to trade and commerce. Ellis was asked by the directors of the LMS to write up his studies of Madagascar, which were published in 1838 as the two-volume History of Madagascar. In 1844 the first volume of his History of the London Missionary Society was also published. Due to ill health, Ellis resigned from the LMS, wanting also to spend more time with his wife