in the Kingdom of Hawaii and high international demand, Campbell became one of the wealthiest people in Lahaina. He used his profits to purchase land on the islands of Oahu, Maui and the Big Island of Hawaii. In 1877, Campbell sold his interest in the Pioneer Mill for half a million dollars to Turton. The Pioneer Mill produced sugar until 1999. Family life On October 30, 1877, the 51-year-old Campbell married 19-year-old Abigail Kuaihelani Maipinepine Bright (1859–1908), a Hawaiian woman of aristocratic family. (She had some Caucasian ancestry on her father's side.) In 1878 he bought a house in Honolulu from Archibald Scott Cleghorn. Cleghorn was brother-in-law to King Kalākaua, and the heir to the throne. Victoria Kaiulani was born in that house. The Campbells had four surviving children of eight born: Abigail, Alice Kamokilaikawai Campbell, Beatrice, and Muriel Campbell. Four other children, including a son James Campbell, Jr., died young. Abigail would marry Prince David Kawānanakoa of the reigning House of Kalākaua and assume the title of Princess of Hawaii. They had three children: Princess Abigail Kapiolani Kawānanakoa, Prince David Kalākaua Kawānanakoa, and Princess Lydia Liliuokalani Kawānanakoa. These children would later become heirs to the throne of the Kingdom of Hawaii as the House of Kawānanakoa. Land holdings While raising his family, Campbell ventured into real estate with purchases of extensive parcels of land. One of his most controversial purchases was of flat, arid and barren 41,000 acres (166 km²) in the Ewa District of Oahu. Other businessmen criticized Campbell for making what appeared to be such a wasteful, unproductive investment and called him insane. In 1879 Campbell hired James Ashley of California to drill the first artesian well in Hawaii to use to irrigate his lands with fresh water. Campbell cultivated the land for sugarcane production and generated great profits from this property. Campbell continued to purchase underestimated plots of real estate and transformed them into productive agricultural districts. He was appointed to serve in the House of Nobles (upper house of the legislature) in 1887 and 1888. He and his wife were loyal supporters of Queen Liliuokalani at the time of her overthrow by the United States in 1893. In August 1896 while in San Francisco, Campbell was kidnapped by Oliver Winthrop, who pretended to be asking real estate advice. Winthrop and an unknown accomplice took $305 from him and threatened to shoot him if he did