Mary M. Fay, 95     PORTLAND -- Mary M. Fay, 95, formerly of Sawyer St., died July 5, 2007, at Seaside Nursing Home.     She was born in Lynn, Mass., the youngest of five children of John L. and Catherine Callahan Fay. Moving to Portland in 1915, she attended St. Joseph's School and Academy. She graduated from Regis College in 1935 and later taught languages for several years.      Mary enjoyed singing and was active in several local musical circles and choruses. She was a lifelong parishioner and choir member at St. Joseph's Church, where she also served in the Legion of Mary.     She was predeceased in 2005 by her beloved sister Catherine, with whom she had made her home.     Relatives and friends are invited to attend a 9 a.m., Mass of Christian Burial on Tuesday, July 17, at St. Joseph's Church, 673 Stevens Ave., Portland. Interment will follow in Calvary Cemetery, South Portland. Arrangements are by Conroy-Tully Crawford Funeral Homes & Cremation Services, 172 State St., Portland. Online condolences may be expressed at www.ctcrawford.com.