Background
He was the son of Lieutenant Harmanus Barkaloo Cropsey, Senior (1753–1830).
He was the son of Lieutenant Harmanus Barkaloo Cropsey, Senior (1753–1830).
He was Sheriff of Richmond County, New York from 1829 to 1831. In 1836, he was among the original incorporators of the Richmond County Mutual Insurance Company. In 1837, he was appointed one of the Commissioners in charge of building a new Richmond County courthouse.
In 1839, he was appointed as one of the Commissioners to receive subscriptions for the capital stock of the New York and Staten Island Ferry Company, to be incorporated.
In 1840, he was an associate judge of the Richmond County Court. In 1843, he was appointed Superintendent of Common Schools of Richmond County.
He was a member of the New York State Senate (1st Doctorate) from 1832 to 1835, sitting in the 55th, 56th, 57th and 58th New York State Legislatures.