Charles Thomas Jackson was born on June 21, 1805, in Plymouth, Massachusetts.

He was an American physician and scientist, active in medicine, chemistry, mineralogy, and geology. In 1829, after graduation from the Harvard Medical School, he travelled to Europe where he studied both medicine and geology for several years and made the acquaintance of prominent European scientists and physicians. Upon his return to the U.S., he played an active role in the new state geological survey movement, serving as the state geologist of Maine, Rhode Island, and New Hampshire (1836-1844). In 1845, he became a mining consultant to the Lake Superior Copper Company. In 1847, he was appointed United States Geologist for the Lake Superior land district, one of the major copper-producing regions of the world. His leadership of that survey proved to be a disaster, and he was dismissed from his position. He published the book "A Manual of Etherization: Containing Directions for the Employment of Ether” (1861). By 1873, Jackson was afflicted with mental illness and spent the remainder of his life in the McLean Asylum, Somerville, Massachusetts.

In 1834, he married Susan A. Bridge (1816–1899). He died on August 28, 1880, in Somerville, Massachusetts.

Charles J. Jackson was the Assayer to the State of Massachusetts, and Assay master to the city of Boston, in the 1850s.

Benjamin Daydon Jackson was born on April 3, 1846, in London England.

He was a British botanist, taxonomer, and author. He was educated at private schools. In 1868, he became a Fellow of the Linnean Society, and in 1880, he was elected its secretary. He is best known as the compiler of “Index Kewensis”, a reference book that appeared from 1893 to 1895, and which was at once accepted as an authority throughout the world for names of flowering plants. He also wrote, "Guide to the Literature of Botany" (1881), "Vegetable Technology" (1882), and "Glossary of Botanical Terms" (1900). Dr. Jackson, who was an honorary Ph.D. of Upsala was created a Knight of the Swedish Order of the Polar Star in 1907, on the occasion of the Linnean bicentenary celebrations.

He died on October 12, 1927, in London, England.

Artimus Jackson was a merchant who lived in Quebec City. He was the second husband of Louisa (Loisa) Harrison Hall, and the step-father of Erle Henry Hall (son of Henry Hall). He died on 4 March 1847.