Ronald Oswald Byrum (born December 29, 1947) is the husband of Cathy Byrum.
Ronnie married Cathy George on July 21, 2011.
He is the step-father of Cathy's children from her marriage to Rick Dillard.
Derick Michael was born on March 9, 1989. He is married to Jill Duggar. They have two sons, Israel David, who was born on April 6, 2015, and Samuel Scott, who was born on July 8, 2017. They suffered a miscarriage in October 2021.