TEWKSBURY - Jeanne (Pinault) Nadeau, of Tewksbury and formerly of Lowell, died Friday, Oct. 18, at her home after a brief illness. She was the widow of Joseph D. Nadeau.Born in Canada, she was a daughter of the late Louis and Christina (Nadeau) Pinault.As a young woman, she worked as a school teacher.Mrs. Nadeau was a communicant of Notre Dame de Lourdes Church and a member of the parish's Ladies Sodality. She was also a member of the Jeanne Mance Cercle.She is survived by a daughter, Helene Nadeau of Tewksbury; a sister-in-law, Roberta Y. Nadeau of Tewksbury; three grandchildren, Debbie Hall-Nadeau of Tewksbury, Michele O'Leary and her husband, Robert, of Weymouth, and Jeanine Delay and her husband, James, of Franklin; six great-grandchildren, Ryan, Ian, Mollie and Kathryn O'Leary, all of Weymouth, and Christine and Timothy Delay of Franklin; also many nieces and nephews.She was also the mother of Wilfrid J. Nadeau, who died in November 2001.