Mary Ann (Sullivan) Kelley, of Melrose, passed away at her home on November 27, 2020 at the age of 79. Mary was born & raised in Everett, a graduate of St. Rose High School, Class of 1958 and went on to attend North Shore Community College and Boston College. She resided in Everett until 1968 and lived in Melrose for the past 52 years. Mary worked for Avco Research Labs, New England Telephone and Harvard Vanguard Medical Associates for many years before her retirement. She volunteered for the Walk for Hunger, United Farm Workers, EMRC (Eastern Middlesex Retarded Citizens), Feed the Hungry (Paulist Center/Pine Street Inn), Boys & Girls Club of America, Right of Life Alliance, Youville Hospital & St. Patrick's Church CCD Teacher, Eucharistic Minister and Pastoral Visitation Ministry. Mary was the loving mother of Kevin P. Kelley of Melrose, Lisa M. O'Neill of Stoneham, Susan E. McGovern & her husband John of Braintree and Brian M. Kelly of Melrose. Devoted daughter of the late Adrian & Adelaide (Moynihan) Sullivan. Cherished grandmother of Jessica, Heather, Evan, Kevin, Mick & Tom. Caring sister of Theresa Troy & her husband Jack of Stoneham, Margaret Creed & her husband Dan of VA and the late Pauline Hattabaugh & her husband Joe of Wakefield and the late Jack Sullivan & his wife Beranice of Everett. Also survived by nieces, nephews, relatives & friends. Visiting hours will be held at the Gately Funeral Home, 79 W. Foster St., Melrose on Thursday, Dec. 3rd from 8:00-9:30AM, followed by a Mass of Christian Burial at St. Patrick's Church, 71 Central St., Stoneham at 10AM. Relatives & friends respectfully invited to attend. Burial in Wyoming Cemetery, Melrose. In lieu of flowers, contributions may be made to St. Patrick's Church, 71 Central St., Stoneham, MA 02180.