Mary (White) Denneen of Quincy, passed away peacefully at age 87 on September 21 after a brief illness.
A lifelong resident of Quincy, Mary graduated from North Quincy High School in 1957, married William Denneen in 1962, and raised four sons. She was active in the community and an advocate for public education, chairing the Citywide Parents’ Organization in the 1970s. In her early career, Mary was as an executive assistant in industry and at the FAA at Logan Airport; after raising her sons, Mary worked at Tufts New England Medical Center, where she served as the Director of Clinical Research Administration prior to her retirement in 2003.
In addition to her beloved husband, William, Mary is survived by three sons and their spouses, Mark Denneen and Anthony Coyle of Boston; Bill and Suzanne Denneen of Baltimore; Jeff and Anne Denneen of Atlanta; and her daughter-in-law, Jen Trynin of Watertown, along with seven grandchildren: Henry, Maeve, Ruby, Darcy, Gracie, Rachel and Liam Denneen. She is also survived by her sister, Dorothy O’Brien, of Weymouth. Mary was pre-deceased by eldest son, Michael, in 2018; by her parents, James White and Marion Payson White; her siblings, James White, Charles White, John White, Jane Daley and Marion Kiernan; and several dear nieces, nephews and friends.
A celebration of Mary’s life will be held on September 28th and 29th, with visitation at Keohane’s Funeral Home, 785 Hancock Street in Quincy on Monday from 4-7pm; and a funeral mass at Sacred Heart Church at 386 Hancock Street, Quincy, on Tuesday at 10:00am, followed by burial at Blue Hill Cemetery, Braintree.
In lieu of flowers, donations may be made in Mary’s memory to Project Alive, a non-profit organization focused on research, advocacy and family support for people like her grandson, Liam, impacted by Hunter Syndrome (projectalive.org); or to the Thomas Crane Public Library (tcplquincy.org), 40 Washington St., Quincy, MA 02169.