Beth Marion was born in Clinton, Iowa in 1912. She attended Northwestern University in Evanston, Illinois and was part of a musical trio called the Co-Eds. After starring in several B-Westerns with the likes of Ken Maynard, Tom Tyler, and Johnny Mack Brown in the 1930s she retired from acting after her marriage to stuntman Cliff Lyons around 1938. They had two children together, Clifford and Gary, and divorced in the mid 1950s. A few years later she married architect Julian Koch and in 1982 they moved from Los Angeles to southern Oregon.