Helen (Callas) Leonard, of Arlington, MA, passed away on November 6, 2014. Beloved wife of the late William Leonard. Devoted mother of Stephen Leonard and his wife Karen Kapelos, Michael Leonard and his wife Sun Young Kim, Constance Leonard and her husband Martin Boner and John Leonard. Loving grandmother of Jason and Sara Leonard and Vassili Boner. Sister of the late George, James and Anna Callas. Also survived by many nieces, nephews, relatives and friends. Funeral Service on Monday, November 10, 2014 at 10am at St. Athanasius The Great Greek Orthodox Church, 4 Appleton St., Arlington, MA. Please meet at church. Visiting hours on Sunday from 3 to 6pm at the Faggas Funeral Home,551 Mt. Auburn St., Watertown, MA. Relatives and friends kindly invited to attend. In lieu of flowers donations in her memory may be made to the above named church. Burial in Mt. Pleasant Cemetery, Arlington, MA.