He was born near Charlottetown, Prince Edward Island on his family's farm, remaining there until his late 20s when he decided to move to Western Canada.
Later, the two men purchased a butcher's shop in town and were soon able to obtain contracts with residential schools and the North-West Mounted Police.
Darke invested his earnings to purchase several blocks of land in town from the Canadian Pacific Railway.
His real estate holdings were profitable enough to allow him to sell his cattle business in order to focus on land development.
He also donated money in 1929 to build the Darke Hall for Music and Art which served as the home of the Regina Symphony Orchestra for 41 years.