DAVIAU, David A. Of Lexington, formerly of South Hadley, June 24th, 2011. Beloved husband of Kathryn C. (Czajkowski) Daviau. Cherished son of Roger and Lorraine Daviau of South Hadley. Dear brother of Gary and his wife Joanne of Elgin, SC. Also survived by many sisters and brothers in-law, and many nieces and nephews. A Mass of Christian Burial will be celebrated in St. Patrick's Church, 30 Main St., South Hadley, on Tuesday, June 28th at 11 a.m. There well be a visitation prior to the Mass from 10:15 to 11 a.m. Visiting hours will be held at the Douglass Funeral Home, 51 Worthen Rd., LEXINGTON, on Monday, June 27th from 4-7 p.m. Relatives and friends are kindly invited to attend. In lieu of flowers, donations in his memory may be made to the Marist Missionary Sisters, 62 Newton St., Waltham, MA 02453 or the Newman Center, University of Mass, 472 N. Pleasant St., Amherst, MA 01002. Interment Notre Dame Cemetery, South Hadley. Late retired teacher and vice principal, Jonas Clarke Middle School, Lexington.