G.R. Williamson lives in Kerrville, Texas with his wife and trusty Chihuahua, "Shooter". He spent his early years living in Crystal City, Texas which is located twenty miles west of King Fisher's ranch in Dimmitt County. As a Boy Scout he hunted arrow heads on the land that once belonged to King Fisher and he fished in the alligator waters of Espantosa Lake.

He has written many articles on Texas historical figures and events in Texas history. In addition, he has penned several western motion picture screenplays that make their way to California from time to time.

Williamson's interview with Willis Newton in 1979 was the basis for his book, Willis Newton - The Last Texas Outlaw. The book details the outlaw's own words about his life of crime as well as the intensive historical research that separated truth from fabrication. It still remains as the only Willis Newton biography.