In 1796, he returned to New York where he was a manager of New York City concerts as well as serving as organist for Trinity Episcopal Church.
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Freeman once headed the Clubhouse Committee of the Crescent Athletic Club (whose headquarters he designed in 1906), and he was a parishioner of Holy Trinity Episcopal Church in Brooklyn Heights.
U.S. Senator William Henry Barnum, the chief executive of Barnum and Richardson and longest serving Chairman of the Democratic National Committee, resided in Lime Rock, and was the founder of Trinity Episcopal Church Trinity Lime Rock.