In 1814, he published in New York his translation of the Commercial Code of France. He was New York County District Attorney from 1815 to 1817.
In May 1821, expecting the cessation of Florida by the Adams–Onís Treaty to take effect in July, Rodman was appointed by President James Monroe the first Collector of the Port of St. Augustine. Rodman was re-appointed several times, and remained in office until 1842. During his tenure as Collector, he also held other local offices (at times acting as Mayor), and practiced law in the local courts.
North Carolina Supreme Court Justice William B. Rodman was his nephew.
- The New York Civil List compiled by Franklin Benjamin Hough (page 369; Weed, Parsons and Co., 1858)
- Niles' Register (issue of June 2, 1821)
- Genealogy of the Rodman Family 1620-1886 by Charles Henry Jones (page 54) [states erroneously that he was U.S. District Attorney of the Southern D. of NY]
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