Abraham & Calvin Edwards of Ashby, Massachusetts.

Abraham Edwards is believed to have been born in Concord, Massachusetts, in 1761. His younger brother Calvin was born two years later, in 1763. Both were the sons of Samuel Edwards and Huldah Easterbrook of Concord. The family moved from Concord to Ashby, Massachusetts, sometime in 1777. Ashby was then and still is today a small village located in Massachusetts on the New Hampshire border due North of Worcester. 

Abraham and Calvin were hard workers and owned everything in common, including several pieces of land in the town of Ashby. They entered a partnership in 1792 and made wooden gear clocks. These clocks are signed on their dials "A & C Edwards." This partnership lasted approximately four short years until Calvin's death at the age of 33. While alive, the collaboration appears to have produced more than 530 clocks. A number of horological references state that their production exceeded 600 clocks, but the highest number that I have personally seen recorded is in the upper 530s. It is assumed that all the clocks made after the partnership ended are signed by Abraham only. Many such examples have been recorded. Early examples of the A&C partnership feature composite metal dials. The later examples, sometime after the number 190, feature the use of a colorfully painted wooden dial.

Abraham and Calvin were responsible for training other clockmakers. Some of these include Abraham's son John and Calvin's sons Calvin Jr. and Samuel. They also trained Alexander, Jacob, and Philander Jacob Willard of Ashburnham. Several members of this Willard family moved to Ashby. A. Eaton, Jonathan Barker, and Samuel Taylor of Worcester. Possibly Bartholomew Ballard from Townsend but worked in Antrim and Temple, NH, and later moved to Ohio. This list of names is still growing.