He taught school and studied law and on January 10, 1835, moved to Buffalo and finished his studies in the law offices of Fillmore & Hall, the partnership of Millard Fillmore and Nathan K. Hall, later becoming a partner.

During his term, the city charter was amended to give the mayor veto power and the Buffalo Commercial Advertiser was designated as the newspaper of the city.

[1] Haven was elected as a Whig to the Thirty-second and Thirty-third Congresses, and reelected as an Opposition Party candidate to the Thirty-fourth Congress (March 4, 1851 – March 3, 1857).

He engaged in the practice of his profession until his death in Buffalo, New York, December 24, 1861.

This article incorporates public domain material from the Biographical Directory of the United States Congress