"Atticus, Prospero, and Dinah are not golden mystics or ecstatic Christians. Rather, they are steely in their hunger for justice, reconciliation and compassion." 

Great article, Robert!  I propose three more fictional saints.  How about Sissy Jupe from Charles Dicken's "Hard Times?"  She is a simple child who suffers under the reign of terror of her teacher, Mr. McChoakumchild.  Despite her poor education and lowly status, she never stops doing the right thing.  Platon Karataev, Pierre Besuhov's fellow prisoner in Leo Tolstoy's "War and Peace," saves Pierre from nihilism.  Also, Bishop Myriel in Victor Hugo's "Les Miserables" is the very picture of a saintly do gooder.  Not only does he give Jean Valjean  a gracious welcome, but when Valjean steals his silver he tells the police he gave it to Valjean.  Valjean converts on the spot and becomes a do gooder himself.