Nelson G. Blalock was born in 1836. He graduated from Jefferson Medical College in Philadelphia, Pennsylvania in 1861 and worked as a surgeon during the Civil War. In 1873 he traveled by wagon from Illinois to Walla Walla, eventually becoming a family doctor here. In 53 years of practice he delivered 6,000 babies. He was involved in many other projects, including installing the first telephones in the state, establishing two large orchards, and pioneering arid land wheat farming.

Nelson Blalock is portrayed by Don Weaver.