About Colin Mackenzie, WS
"Mackenzie, Colin — Apprentice to, and eldest son of, James Hay Mackenzie, W.S. — Born 22d April 1841. Died 1.5th July 1882, unmarried. Deputy-Keeper of the Great Seal, 1866-82."
SOURCE: The Society of Writers to Her Majesty's Signet; 1890; page 132