Silas Morton was born on July 10, 1752 in Plymouth, Massachusetts, the son of Silas and Martha Morton. Silas served as a Minuteman in a militia company from Plymouth, Massachusetts, at the siege of Boston, 1775-1776. On January 1, 1777, Silas was commissioned as a lieutenant in the First Massachusetts Regiment, commanded by Colonel John Bailey. Silas served in New Jersey as an orderly carrying dispatches for General George Washington. He served in Washington’s Army at Valley Forge. On July 16, 1779, he was present at the capture of Stony Point. He was at West Point at the time of Benedict Arnold’s treason, and he witnessed the execution of Major John André.
In 1781, Silas was a lieutenant in the 2nd Massachusetts Regiment under Major Hugh Maxwell. Silas was at the siege of Yorktown, and received from the hand of the Marquis de Lafayette one of the dress swords captured from the British, which by an act of Congress were divided between the Americans and French for distinguished service at the siege of Yorktown. The sword was later given to the Smithsonian Institute.
Silas was Adjutant of the Light Infantry when the British evacuated New York in November 1783. He was a brevet captain, and was a member of the Massachusetts Scoiety of the Cincinnati.
After the Revolution, Silas Morton married Elizabeth Foster on January 5, 1792 in Kingston, Massachusetts. On July 12, 1828, Silas Morton was placed on the pension roll in Massachusetts at a rate of $320 per year. Silas Morton died on March 25, 1840 in Pembroke, Massachusetts.