1780
June: Martha Washington is briefly in Philadelphia where she becomes involved in a campaign to raise money to aid the soldiers in the Continental Army.

1781
April 30: Martha Washington's fourth and last grandchild, George Washington Parke Custis (known to the family as "Washy" and later "Wash") is born at Mount Airy Plantation in Maryland.

September 9: George Washington arrives at Mount Vernon for his first visit home since the war began. Over the next several days, preparations are made for the arrival and entertainment of Washington's military aides and two French generals, all of whom are on their way to cut off the British army at Yorktown. The men, including Martha's son, Jack, who is going as a volunteer aide to his stepfather, leave Mount Vernon on the 12th, leaving Mrs. Washington at home.

October 19: The British surrender to the Americans at Yorktown, Virginia, ending the active military phase of the war.

November 5: Martha Washington's son, John Parke Custis, dies after contracting camp fever at Yorktown.

1782
March: The Washingtons leave Philadelphia for Newburgh, New York, by way of Trenton and Morristown; they reach the army by April 1st.

July 10: Martha Washington departs Newburgh for Mount Vernon.

November 30: Martha Washington, at her husband's request, returns to Newburgh to spend the winter.

1783
Spring: Unofficial word arrives at Newburgh in the spring that a peace treaty had been agreed upon by the British, French and American negotiators in Paris. The army celebrates with a grand illumination.

November 1st: George Washington learns that the peace treaty has been signed. Three days later he announces that the army will be disbanded on the 15th.

December 24: George Washington arrives at Mount Vernon having promised his wife he would be home in time to eat Christmas dinner with her.

Sometime late in the year: Martha Washington's widowed daughter-in-law, Eleanor Calvert Custis, is remarried to a family friend, Dr. David Stuart. Martha's two oldest grandchildren, Eliza and Patty, will continue to live with their mother and step-father at Abingdon. The two youngest grandchildren, Nelly & Washy, make their home at Mount Vernon.