Bull of Pope Lucius III (1181–1185), exempting all Cistercian monasteries from the payment of tithes on the produce of their own labour (‘Audiuimus et audientes’): Verona, 21 March (1185)
Letter of Pope Innocent III (1198–1216) addressed to the archbishop of Canterbury and his suffragans, commanding them to proceed against persons injuring Sawtry Abbey (‘Non absque dolore’): Ferentino, 20 June 1203
Letter of Pope Gregory IX (1227–1241) addressed to the prelates of the Church, concerning injuries to Sawtry Abbey (‘Non absque dolore’): Rieti, 15 July 1231
Letter of Pope Innocent IV (1243–1254) addressed to the archbishop of Canterbury and his suffragans, commanding them to proceed against the enemies of Sawtry Abbey (‘Non absque dolore’): Lyons, 23 March 1249
Bull of Pope Celestine III (1191–1198), confirming the churches and privileges of Royston Priory (‘Sacrosancta Romana ecclesia’): Lateran, 29 July 1192
Letter of Pope Urban V (1362–1370) addressed to the dean of London, commanding him to enforce the restoration of the property of Sawtry Abbey (‘Significarunt nobis dilecti’): Avignon, 13 February 1365