Clearly, he thought, the priory had fallen from Philip’s high standards – another example of the slackness that had crept in under the rule of Anthony, Godwyn’s uncle. But perhaps there was something he could do about this.

The bell rang for Sext, and he closed the book. Sister Mair did the same, and smiled at him, her red lips forming a sweet curve as she did so. He looked away and hurried out of the room.

The weather was improving, the sun shining fitfully between showers of rain. In the church, the stained-glass windows brightened and faded as patchy clouds blew across the sky. Godwyn’s mind was equally restless, distracted from his prayers by thoughts of how he could best use Timothy’s Book to inspire a revival in the priory. He decided he would raise the subject at chapter, the daily meeting of all the monks.

The builders were getting on quickly with the repairs to the chancel after last Sunday’s collapse, he noted. The rubble had been cleared away and the area had been roped off. There was a growing stack of thin, lightweight stones in the transept. The men did not stop work when the monks began to sing – there were so many services during the course of a normal day that the repairs would have been severely delayed. Merthin Fitzgerald, who had temporarily abandoned his work on the new door, was in the south aisle, constructing an elaborate spider web of ropes, branches and hurdles on which the masons would stand as they rebuilt the vaulted ceiling. Thomas Langley, whose job it was to supervise the builders, was standing in the south transept with Elfric, pointing with his one arm at the collapsed vault, obviously discussing Merthin’s work.

Thomas was effective as matricularius: he was decisive, and he never let things slip. Any morning the builders failed to show up – a frequent irritation – Thomas would go and find them and demand to know why. If he had a fault, it was that he was too independent: he rarely reported progress or asked Godwyn’s opinion, but got on with the work as if he were his own master rather than Godwyn’s subordinate. Godwyn had an annoying suspicion that Thomas doubted his ability. Godwyn was younger, but only slightly: he was thirty-one, Thomas thirty-four. Perhaps Thomas thought that Godwyn had been promoted by Anthony under pressure from Petranilla. However, he showed no other sign of resentment. He just did things his own way.

As Godwyn watched, murmuring the responses of the service automatically, Thomas’s conversation with Elfric was interrupted. Lord William of Caster came striding into the church. He was a tall, black-bearded figure very like his father, and equally harsh, though people said he was sometimes softened by his wife, Philippa. He approached Thomas and waved Elfric away. Thomas turned to William, and something in his stance reminded Godwyn that Thomas had once been a knight, and had first arrived at the priory bleeding from the sword wound that had eventually necessitated the amputation of his left arm at the elbow.

Godwyn wished he could hear what Lord William was saying. William was leaning forward, speaking aggressively, pointing a finger. Thomas, unafraid, answered with equal vigour. Godwyn suddenly remembered Thomas having just such an intense, combative conversation ten years ago, on the day he arrived here. On that occasion, he had been arguing with William’s younger brother, Richard – then a priest, now the bishop of Kingsbridge. Perhaps it was fanciful, but Godwyn imagined they were quarrelling about the same thing today. What could it be? Could there really be an issue between a monk and a noble family that was still a cause of anger after ten years?

Lord William stamped off, evidently unsatisfied, and Thomas turned back to Elfric.

The argument ten years ago had resulted in Thomas’s joining the priory. Godwyn recalled that Richard had promised a donation to secure Thomas’s admittance. Godwyn had never heard any more about that donation. He wondered if it had ever been paid.

In all that time, no one at the priory seemed to have learned much about Thomas’s former life. That was curious: monks gossiped constantly. Living closely together in a small group – there were twenty-six at present – they tended to know almost everything about one another. What lord had Thomas served? Where had he lived? Most knights ruled over a few villages, receiving rents that enabled them to pay for horses, armour and weapons. Had Thomas had a wife and children? If so, what had become of them? No one knew.

Apart from the mystery of his background, Thomas was a good monk, devout and hard-working. It seemed as if this existence suited him better than his life as a knight. Despite his former career of violence, there was something of the woman about him, as there was about many monks. He was very close to Brother Matthias, a sweet-natured man a few years younger than he. But, if they were committing sins of impurity, they were very discreet about it, for no accusation had ever been made.

Towards the end of the service Godwyn glanced into the deep gloom of the nave and saw his mother, Petranilla, standing as still as one of the pillars, a shaft of sunlight illuminating her proud grey head. She was alone. He wondered how long she had been there, watching. Lay people were not encouraged to attend the weekday services, and Godwyn guessed she was here to see him. He felt the familiar mixture of pleasure and apprehension. She would do anything for him, he knew. She had sold her house and become her brother Edmund’s housekeeper just so that he could study at Oxford; when he thought of the sacrifice that entailed for his proud mother, he wanted to weep with gratitude. Yet her presence always made him anxious, as if he were going to be reprimanded for some transgression.

As the monks and nuns filed out, Godwyn peeled off from the procession and approached her. “Good morning, Mama.”

She kissed his forehead. “You look thin,” she said with maternal anxiety. “Aren’t you getting enough to eat?”

“Salt fish and porridge, but there’s plenty of it,” he said.

“What are you so excited about?” She could always read his mood.

He told her about Timothy’s Book. “I could read the passage during chapter,” he said.

“Would others support you?”

“Theodoric and the younger monks would. A lot of them find it disturbing to see women all the time. After all, they have all chosen to live in an all-male community.”

She nodded approvingly. “This casts you in the role of leader. Excellent.”

“Besides, they like me because of the hot stones.”

“Hot stones?”

“I introduced a new rule in the winter. On frosty nights, when we go into church for Matins, each monk is given a hot stone wrapped in a rag. It prevents them getting chilblains in their feet.”

“Very clever. All the same, check your support before you make your move.”

“Of course. But it fits in with what the masters teach at Oxford.”

“Which is?”

“Mankind is fallible, so we should not rely on our own reasoning. We cannot hope to understand the world – all we can do is stand amazed at God’s creation. True knowledge comes only from revelation. We should not question received wisdom.”

Mother looked sceptical, as lay people often did when educated men tried to explain high philosophy. “And this is what bishops and cardinals believe?”

“Yes. The University of Paris has actually banned the works of Aristotle and Aquinas because they are based on rationality rather than faith.”

“Will this way of thinking help you find favour with your superiors?”

That was all she really cared about. She wanted her son to be prior, bishop, archbishop, even cardinal. He wanted the same, but he hoped he was not as cynical as she. “I’m sure of it,” he replied.

“Good. But that’s not why I came to see you. Your uncle Edmund has suffered a blow. The Italians are threatening to take their custom to Shiring.”