On October 25, 1820, she married Roger Sherman Baldwin, who became the governor of Connecticut in 1844 and US Senator in 1847.
Emily was also an aunt to Charlotte Perkins Gilman, Frederic Beecher Perkins and US Representative Timothy Pitkin; an aunt-by-marriage to author Edward Everett Hale, the mother of Connecticut Governor and Chief Justice Simeon E. Baldwin; daughter-in-law to US Representative and Judge Simeon Baldwin; mother-in-law to Massachusetts Chief Justice Dwight Foster; grandmother of New York Supreme Court Justice Edward Baldwin Whitney and attorneys Roger Sherman Baldwin Foster and Reginald Foster; the granddaughter of the Rev.
In 1786 her father, Enoch Perkins, began what has become the oldest law firm in continuous practice in the United States, now known as Howard, Kohn, Sprague & FitzGerald; and his original law practice shingle is one of the firm's most prized heirlooms.
In 1855 Thomas Perkins's son Charles expanded the firm's litigation practice and became widely recognized as one of the State Capital's finest trial lawyers.
Charles Perkins also became a close friend and legal counselor to Samuel Clemens, known to most by his pen name Mark Twain.