Mackay, Idaho was named for Clarence Hungerford Mackay, the son of John and Louise Hungerford Bryant Mackay. The Mackay's never lived in Mackay, Idaho, but were honored with the name sake by Wayne Darlington, a renowned engineer and superintendent of mining activity for White Knob Mining Company. Clarence H. Mackay made the investments in the mine above Mackay, Idaho with his father's, John W. Mackay, mining and transaltantic cable fortune. Father, John W. Mackay died in 1902, just one (1) year after Mackay, Idaho was founded in 1901. John and Louise Mackay's oldest son, John William "Willie" Mackay died in France in 1895. Clarence H. Mackay died in 1938. No evidence exists that John Mackay was EVER in Mackay, Idaho.
