WILLIAMS MARY ANN (THIEROFF) Unexpectedly on Wednesday, December 18, 2013, age 82, of Ross Twp. Beloved wife of the late Ronald L. Williams; proud and devoted aunt of Mark Webster, Michael Webster, Carol Kepple, Robert Hartman, and the late Kenneth Webster; dear niece of Betty Bates; sister of the late Rose Marie Hartman; also survived by grand-nieces and grand-nephews. Friends received 2-4 and 6-8 p.m. Friday at the HEARD FUNERAL HOME, INC., 4047 Perrysville Ave., Observatory Hill, where services will be held Saturday at 10 a.m. Burial will follow in Rosedale Cemetery. Family suggests memorials to The American Diabetes Association. Send condolences at post-gazette.com/gb