William Frederick Havemeyer was a successful businessman and three-time mayor of New York City, known for his involvement in the sugar refining industry. He first became mayor in 1845, backed by Tammany Hall, and played a significant role in the establishment of the New York City Police Department. Throughout his career, he focused on reforming the Common Council's powers, improving immigrant conditions, and combating political corruption, notably contributing to the efforts against Boss Tweed's administration. He also advocated for the Union during the Civil War and was a strong supporter of abolition.
