Marianne Russell, of Duxbury, died on January 1st at South Shore Hospital at the age of 68. She is survived by her brother Leo E. Russell of Plymouth, Fran Russell of Marshfield and Pat MacIsaac of Plymouth and her nephews Dean and Sean MacIsaac and his wife Brenda. There are no visiting hours. A funeral Mass will be held on Friday, January 10th at Holy Family Church in Duxbury at 10 AM. A private burial will be held at a later date. In lieu of flowers, donations in her memory may be made to the American Diabetes Association, 1 Bromfield Street, 5th Floor, Boston, MA 02108