He was the youngest of three children born to William and Marth Ann (Mayben) Doyle who were married in Boise City, Idaho, in 1865 on their migration West. Family tradition says that it was not a happy union and William left Martha in 1870 while she was pregnant with George. They were divorced soon after George's birth in 1871. Like his father and brothers, George followed a stock ranching and farming career for much of his adult life. He married Louisa (Laura) Sheets Aug. 29, 1891.