Chi, Mary S.W. (Yuan) of Bedford, formerly of Lexington, July 14, 2009. Wife of the late Chester C.K. Chi. Mother of Alice C. Molvar of Lexington and the late Ronald S.Y. Chi. Grandmother of Robert C. and Lisa C. Molvar. Mary is also survived by 1 greatgrandchild, Mia Chi Nolin and her husband Dustin. A Mass of Christian burial will be held Friday July 17 at St. Michael's Church, 90 Concord Rd. in Bedford at 9am. Relatives and friends are kindly invited to attend. Visitation at the Douglass Funeral Home, 51 Worthen Rd. Lexington Friday prior to Mass from 8 - 8:45 AM. Contributions may be made to the Living Fully, Dying Well Program at Carleton Willard Village, 100 Old Billerica Rd. Bedford, MA 01730. Please make checks out to Carleton Willard Homes, Inc. and write "in memory of Mary Chi" in the memo section. Interment Westview Cemetery, Lexington.