O'Keeffe, Mary T., (Femia) of Arlington February 23. Beloved mother of Dennis O'Keeffe and wife Julie Flynn of Littleton and Patricia DeLonais and husband Bryan of Tewksbury. Dear grandmother of Olivia, Hunter and Paige. Sister of James Femia, Sully Femia, Theresa Costa, Florence Femia, Rose Schofield, Josephine Healey and the late Patrick and George Femia. Funeral from The DeVito-O'Donnell Funeral Home 1145 Mass Avenue ARLINGTON Monday morning at 8:00, followed by a funeral mass at 9:00 in St. Agnes Church. Interment to follow Mt. Pleasant Cemetery. Visiting at the funeral home on Sunday 3:00 to 7:00pm. For directions or condolences visit, devitofuneralhomes.com