Mary Frances (Plas) Bumiller, age 85, of Winchester, passed away on October 16, 2016. She was the beloved wife of the late Donald R. Bumiller, and the loving mother of Donald R. and wife Lauri of Middleton, Charles E. and wife Sherry of Woburn, Mark R. of CA, Ann Marie Rolli and husband Steve of Winchester. She was also the dear sister of Raymond C. Plas of St. Louis, MO and the late Robert Plas, Paul Plas and Joan Kasselmann, and is further survived by 7 grandchildren. Relatives and friends are kindly invited to gather in Costello Funeral Home, 177 Washington St., Winchester, on Friday, October 21st from 4-7 PM, and again on Saturday, October 22nd at 10AM, followed by a Funeral Mass in St. Mary’s Church, 155 Washington St., Winchester at 11AM. Interment is private.