What is Cyrus McCormicks mom's name?

Cyrus McCormick's mother's name was Mary Ann "Polly" Hall McCormick. She was the wife of Robert McCormick, a prominent inventor and businessman who played a significant role in the development of the mechanical reaper. Mary Ann "Polly" Hall McCormick supported her husband in his work and helped raise their children, including Cyrus McCormick, who would go on to further improve and popularize the mechanical reaper.