Cassidy- Joseph J. of Cambridge August 20, 2006. Beloved husband of Dorothy (Pagano) Cassidy. Devoted father of Joseph R. Cassidy. Brother of Robert Cassidy and his wife Shirley, Thomas Patrick Cassidy and his wife Anna, Helen Interrante and her husband Frank, and the late Margaret Louise Cassidy. Brother in law of Mary Pagano. Also survived by many Nieces and Nephews. Donations in his memory may be made to the Development Office Division Cardiovascular Medicine Research Fund, 75 Francis St. Boston, MA 02115 would be appreciated. At the request of the deceased, funeral services and interment will be private.