William Leffingwell

William Elderkin Leffingwell (July 10, 1855 – October 13, 1927) was an American politician.

William Leffingwell was the youngest son of physician Elisha Leffingwell, and brother of Albert Leffingwell, born in Aurora, Cayuga County, New York, on July 10, 1855. After graduating from the Cayuga Lake Academy, he enrolled at Cornell University, then later transferred to the Polytechnic Institute of Brooklyn. Upon graduation, Leffingwell worked for the financial and registrar’s office for seven years, from 1875 to 1882. He later became secretary and treasurer of the Dansville Sanitarium, until that institution burned down. Leffingwell then established the Glen Springs Sanitarium.

Leffingwell died at home in Watkins Glen on October 13, 1927, of heart failure.