Theresa M (Desrosiers) Dundas, Age 80, of Westford passed away July 20, 2011 at Brigham and Womans hospital surrounded by her loving family. Wife of the late John "Jack" Dundas. Theresa was born in Westford on Sept 8th, 1930. She was the daughter of the late Evelyn (Gagnon) (Bechard) and Arthur Desrosiers. Theresa graduated from Westford Academy and worked at the Grodno store in Westford and in later years Bowmar. After retirement she and Jack would travel to the southern states to get away from the winters. Theresa loved playing Bingo and Knitting and Crocheting, but mostly spending time with her family. Theresa is survived by her daughters Sharon Lantagne of Ayer, Karen Gandy and her husband Ronald of Ashuelot, NH, Pamela Quigley and her friend Michael Vaillancourt of Hudson, NH and Darlene Dundas of Westford, MA. Theresa also leaves behind Granddaughters Jennifer Gerlach and her husband William of Ayer, MA, Tracie Seidl and her husband Mike of Nashua, NH. She leaves behind two Great-grandsons Shayne Seidl of Nashua NH and William Gerlach jr. of Ayer, MA and many nieces and nephews. Theresa is pre-deceased by her loving husband John who passed away in 2008, her brother Wallace Bechard, her sisters Esther Lecourt and Una Beaulieu , her son-in-law Paul Lantagne and nieces Nancy Moulton and Elaine Kelley.Friends may call at the Healy Funeral Home on Friday, July 22, 2011 from 5 p.m. until 8 p.m. Theresa's funeral mass will be celebrated at St. Catherine's Church, 107 North Main Street, Westford on Saturday, July 23, 2011 at 10:00 a.m.. Burial in Fairview Cemetery, Westford.