Theophilus Sweet was a 2d Lieut. in the Fifth Regiment, Beekman's Precinct in the Revolutionary War. [New York in the Revolution: Prepared Under Direction of the Board of Regents By New York State Archives, University of the State of New York Board of Regents, 1887 Weed, Parsons and company, printers]
He was among those who signed the revolutionary pledge in Beekman's Precinct, Dutchess County, July, 1775 [William J. Blake,The History of Putnam County, N.Y.: With an Enumeration of Its Towns, Villages, Rivers, Creeks, New York: Baker & Scribner,1849, p. 115 ]