Mrs. Marguerite M. (MacKenzie) McCullough, of Seabrook, New Hampshire, died comfortably surrounded by her family on Tuesday, March 4, 2008 in the Hyder Family Hospice House in Dover, New Hampshire following a lengthy illness. She was 85. Born in Moncton, New Brunswick, Canada, Mrs. McCullough had lived in Waltham since the age of three and had attended Waltham High School. She was an active member of Christ Church in Waltham as well as a member of the Palestine Chapter of The Order of the Eastern Star in Waltham. Mrs. McCullough was the wife of the late Robert H. McCullough, the great grandmother of the late Alexander T. McCullough, Jr., and the daughter of the late Murdock and Bessie (Berry) MacKenzie. She is survived by her children, Robert H. McCullough, Jr., and his wife, Elaine, of Lexington, Sally A. Lobo and her husband, Peter, of Waltham, Charles W. McCullough and his wife, Rebecca, of Mattapoisett, Deborah L. Lockhart and her husband, Robert, of Holliston, Rebecca L. Petersen and her husband, Donald, of Princeton, MA, and Scott D. McCullough and his wife, MaryJo, of Newton, New Hampshrie; her brothers, Murdock J. MacKenzie and his wife, Adeline, of Lincoln and Robert MacKenzie of Northborough; her sisters, Jean Arcese and her husband, Wallace, of Rutland, Vermont and Pauline Chase and her husband, Roy, of Stow; nineteen grandchildren, thirty-one great grandchildren, (anxiously awaiting the birth of her thirty-second great grandchild) and many nieces and nephews. Funeral Services will be held on Saturday at 11 a.m. in Christ Church, 750 Main Street, Waltham. Burial will be in Mount Feake Cemetery, Waltham. Visiting hours will be held in The Joyce Funeral Home, 245 Main Street, (Rte. 20), Waltham on Friday from 4 to 8 p.m. Memorial donations may be made to Grandma's Pantry at Christ Church, 750 Main Street, Waltham, MA 02451 or to The Genesis Fund, 40 Second Avenue, Suite #510, Waltham, MA 02451.