In the absence of much documentary evidence, the abbey's art may shed some light on the values held dear by the community. In the 14th century a number of figures were carved on the previously plain shafts of the arches at the processional entrance to the church and at the entrance to the chapter house. St Peter and St Paul flank the church entrance used by the canons to enter the church for the Canonical Hours. These were the saints most closely associated with the Papacy, from which both the order and the abbey took their authority. For the chapter house, Augustine of Hippo, eponym of the order, and St John the Evangelist, patron saint of the abbey, were obvious choices. The remaining saints were all illustrative of martyrdom, austerity or spiritual struggle. Thomas Becket, murdered on the orders of Henry II, one of Haughmond's major benefactors, was a martyr whose cult at Canterbury was the focus for medieval England's most important pilgrimage. Catherine of Alexandria, seen as a virgin martyr, is portrayed with her wheel of martyrdom, taking revenge on the Emperor Maxentius. John the Baptist, closely associated with asceticism and speaking truth to power, and a Biblical type for Becket, clutches the lamb and flag symbol of the Agnus Dei. He is accompanied by Margaret of Antioch, who is spearing a dragon, a female counterpart to St Michael. St Winifred, a third virgin martyr, whose relics were kept at nearby Shrewsbury Abbey, is shown with her persecutor Caradog sinking into the ground. Facing her, St Michael the Archangel, armed with spear and shield, treads down and impales a dragon, representing Satan.