Tonks, age 72 of South Bermick, ME, formerly of Chelmsford, Roberta J. (Locke) Tonks, died unexpectedly at Saints Memorial Medical Center in Lowell on August 28, 2008. Roberta was born in Concord, MA to the late Wallace B. Locke and Hortense G. (Brown) Locke. She was graduated from Concord High School and went on to receive her RN in Nursing. She spent many years raising her family and worked in various local hospitals as well as at The Middlesex School. She enjoyed gardening, bird watching, needlepoint, the beach, traveling, and spending time in Florida. She recently spent ten days on a tour of the Mackinac Islands in Michigan. She leaves behind her loving husband of 50 years, Gerald D. Tonks; 2 sons, Kenneth D. Tonks of Punta Gorda, FL and Brian G. Tonks and wife Lynne of Chelmsford; 2 daughters, Linda Avila and husband Steven of Amherst, NH and Brenda Swarbrick and husband, Michael of Englewood, FL; seven Grandchildren, Jonathan and Amanda Avila, Alisha and Keri-Ann Tonks, Carissa Tonks, and Jayson and Matthew Swarbrick; and 2 great-grandchildren, Madison Avila and Gavin Gauthier. Also survived by several nieces and nephews. Friends and Family are invited to a celebration of her life with refreshments at The Radisson in Chelmsford on Monday, September 1 from 1:00-4:00 p.m. In lieu of flowers, donations can be made to The American Cancer Society, Kidney or Liver Foundation, American Heart Society, Alzheimer's or Parkinson's Organizations.