(Colden also served in the U.S. House, as well as the New York State Senate.)

OHHHH ... the C. In Cadwallader C. Washburn is for Colden! But it may be the New York mayor's *grandfather* that the Wisconsin governor was named after. Cadwallader Colden (1688–1776) served as the Governor of the province of New York several times in the 1750s and 1770s.