Don Brestler was born in Calgary, Alberta in the middle of the dirty thirties where he received most of his schooling and the remainder in Cardston, Alberta. He showed a definite interest in Western and Wildlife art at an early age. At 18 he became a cowboy on a large old-time Knight Ranch located on the Milk River Ridge of southern Alberta. He cowboyed for a number of years at various Ranches, the last being the McIntyre Ranch south of Magrath, Alberta. For five summers Don wrangled and packed horses in the Rocky Mountains for the late Andy Russell and Dave Simpson. He occasionally rode broncs in a few of the local small town rodeos, the largest being the Calgary Stampede.
Don started illustrating and writing small articles for the Canadian Cattleman magazine. Later he illustrated for the Western Sportsman magazine. Don has also illustrated two books for the late Andy Russell and his own five books, as well as art work in the form of oil paintings and Christmas cards.
Don served as a constable in the Calgary City Police Force for seven and half years. Married with two daughters he moved his family to Twin Butte, Alberta to own and operate a country store (The Twin Butte Trading Post) for a few years. He is now retired and lives with his wife Ingrid in Twin Butte.