Three purgatory poems

["Gast of Gy" "Christian poetry English (Middle)" "Purgatory" "English poetry" "Visio Tnugdali" "Purgatory in literature" "Owayne Miles" "History and criticism" "Poetry" "English poetry history and criticism middle english 1100-1500" "Christian poetry history and criticism" "Christian poetry" "Poetry (poetic works by one author)"]