Harry McClintock was born on October 8, 1882 in Knoxville, Tennessee, USA. He was married to Bessie. He died on April 24, 1957 in San Francisco, California, USA.
Looking like Santa Claus in a cowboy suit with a guitar, Haywire Mac liked to walk through the wards of Children's Hospital in San Francisco singing "Big Rock Candy Mountain".
Wrote stories for railroad magazines.
Had been a railroad switchman in Rhodesia and America.
Worked as a newspaper reporter's assistant in China during the Boxer Rebellion.
Worked as a civilian mule train packer during the Spanish-American War supplying American troops with food and ammunition.