Gellis, Matilda (Lichter) of Newton Centre on Saturday, March 28, 2015. Beloved wife of the late Dr. Sydney S. Gellis. Devoted mother of Beth Crocker and her husband Dr. Stephen Crocker of Bethesda, Maryland and Dr. Stephen Gellis of Waban and his late wife Ellen E. Gellis. Loving grandmother of Melissa Crocker (Kevin Agatstein), David Gellis (Shanthini Kasturi), Andrew Crocker (Anna Sternoff) and Laura Gellis (Jason Matos). Great grandmother of Sam Alex Agatstein. Dear sister of Dorothy Schwartz. Predeceased by her brother David H. Lichter. Graveside services at Mishkan Tefila Memorial Park, 2619 Centre St., West Roxbury on Tuesday, March 31 at 11am. In lieu of flowers remembrances may be made to your favorite charity.