Hopkins arrived in Honolulu in February 1845 on the Hudson's Bay Company
packet ship Nepaul. He initially served minor posts as a government clerk and a police magistrate while he learned the
Hawaiian language. He soon became a naturalized subject of the Hawaiian Kingdom. He briefly served as editor
pro tempore of
The Polynesian, the official newspaper of the government, from December 23, 1848, to May 12, 1849. He later resumed as editor of the
Polynesian and director of the government press from July 7, 1855, to October 6, 1860. An advocate of the
Native Hawaiian people, he wrote an editorial in 1849 promoting the idea of building a free public hospital for the Hawaiians. This idea may have later influenced the foundation of
The Queen's Hospital in 1859. In 1851, Hopkins became a land agent and private secretary to Kamehameha III, who called him "Hopekini", a Hawaiian variant of his surname. During this period, he lived as a member of the royal household on the grounds of one of the royal residences near the
Palace, and developed friendships with the king's nephews Alexander Liholiho (
Kamehameha IV) and Lot Kapuāiwa (
Kamehameha V). He was especially close to the future Kamehameha IV and explored
Mauna Kea together with him on a vacation in the summer of 1849. They continued their friendship into his reign and Kamehameha IV's marriage to
Emma Rooke. The king took counsel with Hopkins in 1859 when he shot and killed his secretary
Henry A. Neilson over a rumour that Neilson was having an affair with Queen Emma. From 1865 to 1866, Hopkins traveled with Queen Dowager Emma (widow of Kamehameha IV who died in 1863) on her trip to Europe and the United States to fundraise for the
Anglican mission in Hawaii. He served officially as her
aide-de-camp and private secretary and was often referred to as Major Hopkins during their travels. In England, Queen Emma met with
Queen Victoria at
Windsor Castle. The group also traveled through France and Italy and in Paris, Queen Emma had a private audience with French Emperor
Napoleon III at
Tuileries Palace. On their return to Hawaii, they visited the United States and was honored by an official reception by President
Andrew Johnson at the
White House. During his two decades in Hawaii, Hopkins served in a number of important government posts including member of the
Privy Council of State (1845–1864), member of the House of Nobles, the upper house of the
legislature of the kingdom (1859–1867) and member of the bureau of public instruction in 1865. He was appointed a colonel in King Kamehameha V's staff on May 6, 1865. Prior to the death of Kamehameha IV, he was briefly appointed
Minister of Finance and served from November 5, 1863, to December 24, 1863, until he was replaced by
Charles de Varigny by Kamehameha V and instead appointed the king's chamberlain and secretary. He later served a short term as
Minister of the Interior from February 18, 1864, to April 26, 1865, until he was succeeded by
Ferdinand William Hutchison. ==Personal life==