Mary V. Wiroll, age 81, wife of the late Frederick Wiroll Sr., died Wednesday, November 16, 2011, at the Fairhaven Healthcare in Lowell. Mary was born in Cambridge, March 3, 1930, the daughter of the late John and Theresa (Houghton) Brawley and lived in Cambridge before moving to Billerica in 1961. Mrs. Wiroll was a former Selectwoman in Billerica, was a member of the DAV Ladies Auxiliary, a member of the Council on Aging, and a former Campfire Leader. Mrs. Wiroll is survived by her sons, Frederick Wiroll Jr. of Billerica, John Wiroll of Merrimack, NH, Joseph Wiroll of Billerica, and Thomas Duggan of Merrimack, NH; and her daughters, Teresa Cassin of Sanbornton, NH, Cathleen Martell and Mary Ellen Walsh, both of Billerica. She is also survived by 25 grandchildren and 19 great grandchildren. Mrs. Wiroll was the mother of the late Michael and Brian Wiroll and great grandmother of the late Reginald Pepin IV.