Mary Ann Knowles (; December 5, 1946 – February 6, 2017) is an American politician. She represented Hillsborough County on the New Hampshire House of Representatives until 2014.
Knowles was born in New Brunswick, New Jersey. Raised in Metuchen, New Jersey, she attended St. Peter the Apostle High School in New Brunswick and then Douglass College of Rutgers University."Miss Demyan Is a Bride", Courier News, November 25, 1966. Accessed August 19, 2026, via Newspapers.com. "The couple are graduates of St. Peter's High School, New Brunswick. The bride attended Douglass College and is employed by Dr. Arthur Nagy of New Brunswick." In 1990, she and her husband moved from Somerville, Massachusetts, to Hudson, New Hampshire where she became active in Democratic Party politics. She resided in Nashua. Knowles died on February 6, 2017, from cancer.
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