The answer seems to depend on your definition of first lady. Several presidents were not married while they were in office and they still had to host state occasions so they would usually have some woman to serve as hostess,
James Buchanan's niece, Harriet Lane, attracted favorable attention as White House hostess. Dolley Madison helped Martin Van Buren entertain. Thomas Jefferson's daughter Martha " Patsy" Randolph was often hostess for Jefferson .
The wife of Andrew Jackson's wife's nephew, Andrew Donelson, helped Jackson entertain.
Harriet Lane, James Buchanan 's niece served as his White House hostess since he was a bachelor. I am not sure that she would be called the first lady. I am sure that she did not have the large staff that the current first lady has. "First lady" is not an official position, although the wife of the president is now referred to as the first lady. Besides Buchanan there have been other Presidents whose wives had died or were too ill to be a hostess. For example, Jefferson's daughter , Patsy, lived in the White House and served as the official hostess while she was there.
Martha Jefferson Randolph, daughter of Thomas Jefferson, whose wife died 19 years before he took office.
Emily Donelson, niece of Andrew Jackson, whose wife died shortly after he was elected President.
Sarah Yorke Jackson, daughter-in-law (by adoption) of Andrew Jackson.
Angelica Singleton Van Buren, daughter-in-law of Martin Van Buren, whose wife died 17 years before he took office.
Priscilla Cooper Tyler, daughter-in-law of John Tyler, whose first wife died during the second year of his presidency.
Harriet Lane, niece of James Buchanan, who never married.
Mary Arthur McElroy, sister of Chester A. Arthur, whose wife died the year before he took office.
Rose Cleveland, sister of Grover Cleveland, who was unmarried until the second year of his first presidency.
Mary Harrison McKee, daughter of Benjamin Harrison, whose first wife died during the last year of his presidency.
Margaret Woodrow Wilson, daughter of Woodrow Wilson, whose first wife died during the second year of his presidency.
JAMES BUCHANAN. HIS NEICE WAS CONSIDERED THE FIRST LADY. HER NAME WAS HARRIET LANE
US president Woodrow Wilson. His first wife had died, so he met and married Edith Bolling Galt. I believe he's still the only president to get married in the White House. The Treaty was the Treaty of Versailles.
John Adams, while the house was still under construction.
John Adams was the first president to live in the house. Yet, when he moved in they were still building it. The laundry was hung in what is now the East Room.
the president is still president
the president is still the president.speaker of the house
President James Buchanan was the only president who never married; his niece Harriet Lane assumed the role of First Lady when it came time to entertain or host official dinners at the White House. President John Tyler had been married, but his first wife died. He was temporarily wifeless (for about two years), but he then re-married, while still in office.
She is still living.
If you didn't get a divorce, you are married.
The first President born in the United States was George Washington, and the only President never to marry was James Buchanan, the 15th President of the United States. A link can be found below.
They are still married. On October 3, 2012, they celebrated their 20th wedding anniversary.
John Tyler was the first US President to re-marry while in office.President Tyler's first wife died in 1842 about a year after he took over as President following the death of President William Henry Harrison. He got remarried June 26, 1844, not long before the end of his time as President. He would be the first President to get married while in office.Woodrow Wilson's first wife, died August 6, 1914, the summer after he took office. He remarried December 18, 1915 while still President, but this was obviously many years after Tyler and Cleveland.The only President to come to office a bachelor and get married while serving as President was Grover Cleveland.
John Adams was the first to live in the White House. He moved in about 4 months before his term ended.John Adams was the first to live in the White House. He moved in about 4 months before his term ended.John AdamsAbigail Adams was the first White House hostess.