Roswell B. Mason

Roswell B. Mason (September 19, 1805 – January 1, 1892) served as mayor of Chicago, Illinois (1869–1871) for the Citizens Party.
Roswell was born on September 19, 1805 in Hartford, New York. He was never married and had no children. 
Roswell held a high position with the Illinois Central Railroad until he decided to run to be Mayor of Chicago on a reform ticket. During Mason's administration, the Great Chicago Fire occurred. Mason responded by directing General Philip Sheridan to place the city under martial law.
Mason died on January 1, 1892 from natural causes in Chicago, Illinois, aged 86.