James McLean was a farmer born in Ireland in approximately 1816. He moved to Quebec and lived in Godmanchester. He lived there with his wife Letticia and their children, Elizabeth, Margaret, James, Sarah, John, and William. In 1851, he purchased land in Hinchinbrooke with Alexander McLean from the Hall family. He died on 27 June 1889.

Hector McLean or MacLean was born in 1783 in Kingairloch, Scotland, the heir to the Estate of Kingairloch. He sold the estate and came to Pictou, Nova Scotia in 1803, where he set up a business on Deacons Wharf with his brother-in-law, Simon Fraser. He married a daughter of Captain Simon Fraser (father of explorer and fur trader Simon Fraser). He died in Pictou in 1827.

Calvin S. McLean emigrated to South Africa in 1910, after receiving his B.Sc. from McGill University. He was a pioneer in the development of South African gold and uranium mining. McLean also served on various committees and commissions and was chairman of the Prevention of Accidents Committee of the Chamber of Mines.

Alexander McLean was a farmer born in Scotland in approximately 1814. He moved to Quebec and purchased land in Hinchinbrooke from the Hall family in 1851. He lived there with his wife Janet and their children, John, Malcolm, Lachlan, Agnes, William, Jane, Janet, and Alexander. He died on 25 November 1884.