PERRY, Dorothy K. (Alberts) Passed away peacefully surrounded by her loving family on October 25, 2017. Of Arlington, formerly of Cambridge and Somerville. Loving mother of Stephen Perry and his fiancé Laura of Arlington, Karen Corr and her husband Kevin of Melrose, Christopher and his wife Patricia of Billerica, and the late Joseph Perry. Devoted grandmother of Colin, Brianna, Harrison, Molly, Charlotte, Joseph, Sarah, and Abbygail. Cherished sister of Richard “Al” Alberts of PA. Dorothy worked many years at Bay Bank in Arlington. Her real passion was working as a teacher's aide at Saint Joseph's and Saint Anthony's Schools in Somerville and Somerville public schools. Funeral from the Keefe Funeral Home, 5 Chestnut St. (adjacent to St. Agnes Church, Rt. 60) ARLINGTON, Thursday at 9 am. Funeral mass in St. Joseph’s Church, Union Square, Somerville at 10 am. Relatives and friends are invited. Visiting hours Wednesday 4-8 pm. Burial in Mount Pleasant Cemetery, Arlington. In lieu of flowers, donations may be made to the John T. Forcellese Memorial Fund, P.O. Box 2462, Teaticket, MA 02536 www.johns-team.org. For directions or to send a message of condolence, please visit www.keefefuneralhome.com.