Ann M. Dunn, age 83, of Cohasset, suddenly on May 24, 2013. Beloved wife of the late Joseph A. Dunn. Loving mother of Susan M. Hassey (Frank) of Scituate and Melissa A. Dunn (George) of Boston. She is also survived by her sister Joan M. O'Hearn of Newton and two step grandchildren, Karen Hassey and Lynne Lofberg. Mrs. Dunn grew up in Chestnut Hill and was a resident of Cohasset for 56 years. She was a graduate of Beaver Country Day School and Lesley College. Mrs. Dunn was a former member of the Cohasset Yacht Club and the Cohasset Garden Club. Funeral Services are Private.