We haven't found a formal wedding announcement or marriage record yet for Mary's wedding but did find that the Mount Holyoke Directory of 1887 provides a record that Mary S Bennett married Charles W. Morse and also lets us know that she attended Mount Holyoke!
MARY S BENNETT MORSE
Mary Bennett was born Feb 3, 1853 in Newmarket, New Hampshire to Abigail Adams Shackford and George A Bennett. Her father was a druggist, the Boston and Maine station agent, and a farmer and was also described as "an intellectual man with a well-read library." We find Mary living with her parents at age 7 in the 1860 census but by 1870 she has left home, possibly attending Mount Holyoke where she graduated in 1872. She married Charles William Morse in 1875 and gave birth to a daughter Catherine (Kate) Morse on July 9, 1876. She remained in Haverhill her whole life and announced a genealogy in preparation about Arthur Bennett of Newmarket in January 1906. In July 1906 the publication about William Shackford of Newington was announced being drafted jointly with Samuel Shackford of Winnetka, IL and S. B. Shackford of Dover, NH. We presume that Mary was researching the Newington and Newmarket SHACKFORD descendants.
In 1908 Mary donated two books and eight manuscripts to the New Hampshire Genealogical Society (we'd love to learn what they were!). Five years later her husband died while on a business trip to Florida. He'd gone there to improve his health so possibly she had spent time helping to care for him in the preceeding years. After his death, Mary moved to 206 Lawrence St in Haverhill where she lived with her daughter Kate where she was involved in the Lady's Monday Women's Club. We haven't found her obituary yet but know that Mary Shackford Bennett Morse died on November 25, 1930 in Haverhill at the age of 7 and is buried in Linwood Cemtery in Haverhill, Massachusetts.
Catherine N Morse (1876-1940) - did not marry, attended Mt Holyoke and Bryn Mawr
"BRYN MAWR'S OPENING," New York Times, 21 September 1900; Access Newspaper Archive (: accessed 2 December 2014), http://access.newspaperarchive.com
"Find A Grave Index," Index, FamilySearch (http://familysearch.org : accessed 30 November 2014), Mary S Bennett Morse, Find A Grave Memorial# 87192632
Fitts James Hill, Rev. and Edited and Arranged by Rev. N. F. Carter, History of Newfields New Hampshire 1638-1911 (Concord, N. H.: 1912), page 443; digital images, Google Books (http://books.google.com : accessed 16 February 2014
The Gas Age Volume 32 (n.d.), page 4, July 1, 1913; digital images, Google Books (http://books.google.com : accessed 30 November 2014
General Catalogue of Officers and Students of Mount Holyoke Seminary, South Hadley, Mass. 1837-1887. With an Appendix, 1887-1889. (Springfield, Mass: Mount Holyoke Seminar and College, 1889), page 113; digital images, Google Books (http://books.google.com : accessed 3 December 2014
Parkes Joanne Shackford, "Abigail Adams Shackford, quilter, marries George Augustus Bennett (Blog 22)," Parkes, Joanne Shackford, SHACKFORD Family History Blog 22, 15 February 2013 (http://shackfordgenealogy.weebly.com/shackford-blog/abigail-adams-shackford-marries-george-augustus-bennett : accessed 16 February 2014
Massachusetts, Massachusetts, Births, 1841-1915, , Kate N. Morse, 9 July 1876; digital images, FamilySearch (http://www.familysearch.org : accessed 30 November 2014).
New Hampshire "New Hampshire, Births and Christenings," database, FamilySearch (http://www.familysearch.org : accessed 2 December 2014), Mary Bennett b. 3 Feb 1853
Tibbetts Charles, W. Editor, The New Hampshire Genealogical Record. Vol V. January 1908-October 1908: An Illustrated Quarterly Magazine Devoted to Genealogy, History and Biography (Dover, N. H.: Charles W. Tibbetts, 1908), page 96,; digital images, Google Books (http://books.google.com : accessed 3 December 2014
Winslow Helen M., Editor and Publisher, Official Register and Directory of Women's Clubs in America 1922 Vol. XXIV (Boston: N. A. Lindsey & Co., Inc, 1922), Page 40; digital images, Google Books (http://books.google.com : accessed 3 December 2014