Merle Haggards first wife got pregnant to another man while he was in jail. What happened to that child?

Merle Haggard's first wife, Leona, became pregnant with another man's child while he was incarcerated. The child, a son named Marty, was raised by Leona and her family. Merle Haggard later acknowledged Marty as his son, and they developed a relationship in later years. This situation contributed to the complexities of Haggard's personal life and relationships.