Waltham Miss Mary C. Vaughey, of Waltham, died Sunday, April 2, 2006 in Mount Auburn Hospital, Cambridge. She was 69. A lifelong Waltham resident, Miss Vaughey was employed as a legal secretary for the Raytheon Company. She was the daughter of the late John K. and Agnes J. (Cavanaugh) Vaughey and the sister of the late John J. Vaughey. Mary is survived by her sister-in-law, Eleanor M. Vaughey of Marlborough; 3 nephews, John T. & Thomas K. Vaughey both of Illinois and James P. Vaughey of Salem; a niece, Maureen Greer, of Acton; 3 great nieces and 1 great nephew. Graveside Services will be held on Wednesday at 11:30 a.m. in Mount Feake Cemetery, 203 Prospect Street, Waltham. Memorial donations may be made to The Stigmatine Mission Office, 554 Lexington Street, Waltham, MA 02452.