Scott Saw your posting about Captain Charles Knowles - my ancestry goes back to Captain James and Martha, but through their eldest son James born August 6, 1745, brother of Charles.
I have a Knowles Genealogy book published about 1973 - and happen to be working on James Knowles right now - and what this says is:
Captain Charles, d. unm. at Marietta, Ohio in 1796.He was an officer in the Revolution and an original member of the Massachusetts Society of the Cincinnati, organized 9 June 1783.Drake's "Biographical Notices" (1873) says of him:"Charles KNowles, James, an officer in the Revolutionary Navy, and Martha, who m. John Strong, were children of Capt. James and Martha (Stillman) Knowles of Wethersfield, Conn.Soon after the battle of Lexington, Charles joined Capt. Meig's Co. in Middletown, Conn, and marched to Cambridge; was com. lieut in Knox's artillery regiment in 1776; lieut. and paymaster in Crane's artillery regiment 1 Jan. 1777; 1st lieut. 1 Aug. 1778; capt-lieut. 13 Sept. 1780; and finally closing his paymaster's accounts in 1785, went to Ohio where he was on the first jury at Marietta in 1788, and d. unm. in 1796".He was one of the signers of the original petition of officers in the Continental Line of the Army, dated 16 June 1783, for starting an English settlement in the territory west of Pennsylvania, signing himself "Charles Knowles, Capt. Artillery, Mass."