Candace Lynn Wheeler was born in Lucas, Ohio. Little is publicly known about her early childhood, but it laid the foundation for the woman who would later become embroiled in one of Texas' most infamous murder cases. Her upbringing undoubtedly shaped her personality and coping mechanisms, factors that would be scrutinized intensely during her trial.

Candy married Pat Montgomery, an electrical engineer, and they eventually moved to Collin County, Texas. They built a comfortable suburban life, becoming active members of the Methodist Church and raising two children. This period represents a seemingly idyllic existence that would soon be shattered by hidden desires and tragic consequences.