DeFelice, Mary A. (Casello) of Lexington, May 11, 2010. Wife of the late Nicholas DeFelice. Mother of the late Nicholas DeFelice JR and Mary Jane Burns. Sister of Charles Casello of Watertown. Mary is also survived by 4 grandchildren, Tommy, Bonnie, Michelle, and Stephen, and by 7 greatgranchildren. Funeral from the Douglass Funeral Home, 51 Worthen Rd. Lexington Friday May 14 at 9am followed by a Mass of Christian burial at St. Brigid Church, Lexington at 10am. Relatives and friends are kindly invited to attend. Visiting Hours Thursday 4-8 PM. Donations in her memory may be made to Nashoba Nursing Service & Hospice, 2 Shaker Rd. Suite 225D, Shirley, MA 01464. Interment Westview Cemetery, Lexington.