After his resignation, Pierpont served as pastor of a Unitarian church in Troy, New York (1845–1849), and then led the First Parish Church (Unitarian) in Medford, Massachusetts (1849–1856).
Nach seinem Rücktritt diente Pierpont als Pastor an einer Unitarier-Kirche in Troy, New York (1845–1849) und führte dann die First Parish Church (Unitarian) in Medford, Massachusetts (1849–1856).