Joseph N. Dunning of Concord, Massachusetts and Burlington, Vermont.
Joseph N. Dunning was born in Brunswick, Maine, on January 2nd, 1795, and died in Burlington, Vermont, on December 14th, 1841. He was first a journeyman working for Lemuel Curtis in Concord before they formed an informal partnership before 1820. In 1821, they formally advertised their partnership, and both men moved to Burlington, Vermont. It was during this period Burlington was experiencing an economic boom. There, they became two of Vermont's most prolific manufacturers of wall timepieces. They also sold watches and jewelry. In 1832, the partnership dissolved, and Dunning continued to work on his own. He died bankrupt at the age of 46.
For a further discussion on Vermont-made timepieces and the clockmaker Joseph Dunning, please read Paul Foley's book, "Willard's Patent Timepieces."