Robert Campbell was born on June 21, 1835, in Drummond, Lanark County, Ontario.

He was a Presbyterian minister, botanist, educator, and author. He graduated from Queen’s College, Kingston (B.A., 1856; M.A., 1858) and became headmaster of Queen’s College School in 1856. In 1862, he was ordained and inducted into St. Andrew’s Church in Galt, Cambridge, Ontario. In 1866, he accepted a call from the famous Scottish Presbyterian Church of St. Gabriel Street Church in Montreal where he would serve until his retirement in 1909. He held the title of minister emeritus from 1909 until his death. Proud of his Scottish heritage, Campbell was a founding member of the Celtic Society of Montreal, established in 1883. He was a member of the board of managers of the Presbyterian College of Montreal (1875-1883) and he also taught church history there (1904-1905, 1916). An amateur naturalist, he collected avidly wherever he went in North America and Europe. He donated an extensive collection of 2765 sheets to the McGill University Herbarium. He was the author of several papers and articles dealing with the flora of the island of Montreal, the Rocky Mountains, and North American goldenrods, published in the Canadian Record of Science. He also wrote the book "A History of the Scotch Presbyterian Church, St. Gabriel Street, Montreal" (1887).

In 1863, he married Margaret Macdonnell (1841–1912). He died on March 13, 1921, in Outremont, Montreal, Quebec.

Samuel Minor Campbell was born on June 1, 1823, in Campbell, Steuben County, New York.

He was a prominent Presbyterian minister in central and western New York. He graduated from Franklin Academy at Prattsburgh, N.Y. and from the Theological Seminary at Auburn, N.Y.C. He became a Presbyterian pastor at Paris Hill, Oneida County, at Dansville, then at Utica and at Rochester. From there he went to Minneapolis, Minnesota where he was a pastor and one of the editors of a Presbyterian Weekly paper. He continued to Astoria, Oregon, and subsequently, for the benefit of his health, he moved to Southern California and became a pastor there. He travelled to the “Holy Land,” Asia, and wrote an interesting book of his travels through Egypt and Palestine. He was an unusually able preacher, a very interesting writer, and a frequent contributor to the Presbyterian newspapers east and west.

In 1845, he married Sophia Louisa Burton (1826–1877). In 1877, he married Mary B. Lawrence Judson (1827-1901). He died on November 17, 1892, in Minneapolis, Hennepin County, Minnesota.

Thomas Edmund Campbell, CB, was born to affluent parents, Duncan and Harriet Campbell, on January 14, 1809, in London, England.

He was a military officer, a politician, and a developer of the Seigneury in the county of Rouville, Quebec. In 1824, he joined the East India Company’s Military Academy at Addiscombe. In 1832, he graduated from England’s prestigious Royal Military Academy Sandhurst and was appointed a Captain in the Royal Regiment of Foot, later a Captain in 1st Regiment of Light Dragoons, and then he joined the Queens Own 7th Hussars. He travelled extensively on various military missions (Turkey, Russia, Egypt). In 1838, he came to Lower Canada during the Lower Canada Rebellion and he was given command of a company of 7th Hussars along with a force of a group of Mohawks at Caughnawaga against the patriot forces at Châteauguay. In 1839, he became Governor Charles Edward Poulett Thomson's military secretary and aide-de-camp. He helped structure the first election held in the Province of Canada in 1841. Campbell purchased the Seigneury of Rouville at St. Hilaire in 1844. In 1846, he retired from the military service to become actively involved in the responsibilities as the new Seigneur de Rouville. He set up a model farm where he took great interest in growing trees. Thomas is credited with founding the Lower Canada Agriculture Society and starting an Agriculture Fair where prizes were given to the best farmers. He also started the first agricultural school in Quebec in the city of Saint Anne-de-la-Pocatière. In 1854, his various military involvements were recognized by being bestowed on the title of Companion of the Bath (CB) by Queen Victoria. He was also a director of the Bank of Montreal and the Grand Trunk Railway. He continued to supervise the operation of the Seigneury of Rouville until his death in 1872.

In 1841, he married Henriette Juchereau Duchesnay (1813–1873). He died on August 5, 1872, in Ste-Hilaire, Quebec.

William Creighton Campbell was born on December 6, 1850, in Gerrardstown, Berkeley County, West Virginia.

He was a Presbyterian pastor and one of the pioneer residents of Roanoke, Virginia. In 1876, he graduated from Hampden-Sydney College, Virginia and in 1879, from the Union Theological Seminary, N.Y.C. In 1881, he arrived in Roanoke (then the town of Big Lick) where he spent the next 41 years as a pastor of the First Presbyterian Church.

In 1881, he married Anna Gale Child (1857–1907). He died on February 27, 1936, in Roanoke County, Virginia.