Sheilagh Thompson was born on December 10, 1923 to Robert and Leah Thompson. She grew up in Southern California and graduated from San Pedro High School. She earned her BA in 1944, her MA in 1947, and her PhD in 1951 all in anthropology from the University of California, Berkeley. She married Richard Brooks on November 10, 1951, and the couple had two children, Kathleen and Carolyn.

In 1961, at the age of thirteen, Gerald “Jerry” Gordon became a bar mitzvah. This typical coming of age celebration was unusual in that he had simultaneously studied in both his home state of California and his adopted home of Las Vegas, where he spent summers with his grandparents. 1961 is also the same year that the Gordons made Las Vegas their permanent home.