Josiah Dean (March 6, 1748 – October 14, 1818) was a U.S. Representative from Massachusetts and a prominent local official and businessman in Raynham, in the Province of Massachusetts Bay. He was born in Raynham, then a part of British colonial Massachusetts, and attended the common schools available in his community. Growing up in a rural New England town in the mid-eighteenth century, he was educated in the basic curriculum of reading, writing, arithmetic, and civic and religious instruction that characterized colonial common schooling.
As a young man, Dean entered into business pursuits that would occupy much of his adult life. His primary commercial activities were in the rolling-mill and shipbuilding business, enterprises that were important to the regional economy of southeastern Massachusetts in the late eighteenth and early nineteenth centuries. Through these ventures he became a figure of some local prominence, combining industrial and maritime interests at a time when coastal trade and small-scale manufacturing were central to the economic development of the area.
Dean’s standing in Raynham led to a series of local public offices. He served as a selectman in 1781, participating in the town’s executive and administrative affairs during the closing years of the American Revolutionary War. Later, he was chosen as town clerk in 1805, a position that placed him in charge of maintaining official town records and documenting local governmental actions. These roles reflected the trust placed in him by his fellow citizens and provided him with practical experience in public administration.
Building on his local service, Dean advanced to state-level office in the early nineteenth century. He was a member of the Massachusetts State Senate from 1804 to 1807, representing his district in the upper chamber of the state legislature during a period of political realignment in the early republic. In the Senate he would have taken part in deliberations on state laws, fiscal measures, and policies affecting commerce and infrastructure, though specific details of his legislative initiatives are not extensively documented.
Dean entered national politics when he was elected as a Democratic-Republican to the Tenth United States Congress. He served as a U.S. Representative from Massachusetts for one term, from March 4, 1807, to March 3, 1809. His tenure in Congress coincided with the administration of President Thomas Jefferson and with significant national issues such as tensions with Great Britain and France and debates over trade restrictions, including the Embargo Act of 1807. As a Democratic-Republican, Dean was aligned with the party that generally favored agrarian interests, limited federal government, and sympathy toward France in foreign affairs, although the specific details of his voting record are not widely preserved.
After leaving Congress in 1809, Dean returned to state politics. He was elected to the Massachusetts House of Representatives in 1810 and 1811, serving in the lower chamber of the state legislature. In this capacity he continued to participate in shaping state policy during the years immediately preceding the War of 1812, while maintaining his longstanding ties to local affairs and business interests in Raynham.
In his later years, Dean remained in the private sector, continuing his involvement in the rolling-mill and shipbuilding business and residing in his native town. He did not return to national office after his single term in Congress, but he retained the profile of a respected local leader who had represented his community at the town, state, and federal levels. Josiah Dean died in Raynham, Massachusetts, on October 14, 1818. He was interred in Pleasant Street Cemetery, where his burial marked the close of a life spent largely in service to his town and state during the formative decades of the United States.
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