William C. Kittredge graduated Phi Beta Kappa from Williams College and earned a master's degree from the same institution. He practiced law across multiple states and engaged in business ventures, including roles with the National Life Insurance Company and a marble company. Kittredge held various judicial and legislative positions, including serving as Lieutenant Governor of Vermont and as Speaker of the Vermont House of Representatives. He transitioned to the Republican party during its formation in the 1850s.

William C. Kittredge balances a business-centric economic philosophy with a deep commitment to local governance, evident in his roles in both the Vermont legislature and judiciary. His ideological shift from Whig to Republican highlights a strategic alignment with emerging political forces while maintaining a focus on regional economic interests. Kittredge's legislative and judicial careers reveal a calculated approach to policy, often blending pragmatic business interests with a commitment to local governance. His involvement in both the National Life Insurance Company and a marble enterprise underscores a unique intersection of private sector acumen and public service.