http://en.wikipedia.org/wiki/Abigail_Adams_Smith

Abigail "Nabby" Adams Smith (July 11, 1765-August 15, 1813), was the firstborn daughter of Abigail and John Adams. She was named for her mother.

Nabby was born on July 11, 1765 In Braintree, Massachusetts. She was the favorite child, she was showered with the attention by her mother and father. At the age of 10 she a mature girl and helped her mother with farm chores while her father and brother were away on diplomatic missions. Her neighbors criticized her for being stuck up. Her mother however, was happy her daughter was a mature young woman by the age of seventeen.

On June 12, 1786 she married Colonel William Stephens Smith and had 3 children, William, John, and Caroline.

In 1810, Nabby was diagnosed with breast cancer. She had surgery performed, but that was no better, and she died in 1813 with her mother and father with her. She was just 48 years old. -------------------- From Massachusetts Historical Society "Adams Biographical Sketches" find at http://www.masshist.org/adams/biographies ABIGAIL ADAMS SMITH, the oldest child of John and Abigail (Smith) Adams, was born 14 July 1765. At the age of eighteen, Abigail traveled abroad with her mother, where she met and married (12 June 1786) Col. William Stephens Smith of New York, secretary to the U.S. Legation in London. Smith had served in the Continental Army during the Revolution and had been an aide to George Washington. The Colonel’s poor judgment in business matters, especially land speculation, following the couple’s return to New York in 1788 placed their household under severe financial restraints. Abigail died of cancer in August 1813 at her parent’s home in Quincy, having survived a mastectomy in October 1811.