Ephraim Clark arrived from England in 1780 settling in Philadelphia. Ephraim was a distinguished maker as was his son, Benjamin, who was listed in directories as a clock and watchmaker from 1793 to 1848. Together, they ran the business and in 1793 succeeded the eminent Philadelphia clock and watchmaker John Wood, who headed the local guild, The Philadelphia Clock and Watchmakers Company (Harris, 699), a good indication of Clark's capabilities and stature in the Philadelphia community. 

Benjamin's sons, Charles, Jesse and Ellis all worked in the business at times until 1811 when Ephraim retired. Benjamin and son Ellis continued under the name B&E Clark from 1811 to 1845 and became one of the largest material dealers, including the largest suppliers of imported forgings and castings to Pennsylvania tall case makers (Gibbs, 24).
Ephraim Clark Watch
Ephraim Clark Watch

Ephraim Clark
Description: Movement signed "Ephm Clark 409 Philadelphia" Beautifully finished, high grade fusee movement with a verge escapement, round baluster pillars, enamel dial with intricate gold hands, and signed and numbered dust cap.

Ephraim Clark Watch

Matching silver pair cases with Chester date mark for 1800 and maker mark "IE" (John Ellison of Liverpool).

Ephraim Clark Watch

Ephraim Clark's watch paper: Ephraim Clark Watch & Clock Maker, The South East Corner of Front and Market Streets, Philad. Uncut early American papers like this one are rarely seen, circa 1780. 

Ephraim Clark Watch Paper

References and recommended reading:
  • James Gibbs, Pennsylvania Clocks and Watches, Pennsylvania State University Press, 1984, pp. 23-24
  • Carter Harris, A Philadelphia Clockmakers Company: Some Documentary EvidenceNAWCC Watch & Clock Bulletin, No. 233 (December, 1984), pp. 698-703
  • Richard Newman, Colonial and Early American Watchmakers, NAWCC Watch & Clock Bulletin, No. 389 (December, 2010), pp. 692-706