Chapter 45: The Cartulary of Frozen Oaths

The Po Valley lay beneath a blanket of grey, the dawn light struggling through clouds that promised rain by midday. Aldric rode with his shoulders hunched against the damp, Gerold a solid presence at his flank, and behind them the small retinue that Charlemagne had insisted upon—men who watched Aldric with the wary respect due a lord who had outthought the Emperor’s scholars and survived.

The woman in the grey cloak had not reappeared. Aldric had searched the shadows of the church at dawn, finding nothing but the priest’s suspicious stare and the cold ashes of a fire that had been stamped out hours before. Hildegard moved like a ghost when she chose, and she had chosen to let him know she was near without letting him find her.

He did not know whether that was mercy or warning.

The road south curved through vineyards stripped bare by autumn, their skeletal branches reaching toward the sky like the fingers of supplicants. Aldric found himself staring at them with an ache that surprised him. His own vines in the Vosges would be sleeping now, waiting for the spring that he might never see.

“You look like a man riding to his own execution,” Gerold said.

“Perhaps I am.”

“The Emperor does not execute men he finds useful.”

“No,” Aldric said. “He does something far worse. He makes them indispensable.”

Gerold grunted. The Saxon had never fully understood his master’s obsession with obscurity. To a man who had lost everything in the wars—his family, his lands, his name—the idea of fleeing glory was incomprehensible. Glory was the only thing the Saxons had left, and Aldric treated it like a plague.

They stopped at midday at a waystation that had once been a Roman posting house, its stones older than the Frankish kingdom itself. Aldric sat on a crumbling wall and unrolled the map that Charlemagne’s scribes had prepared—a map of Italy, of Rome, of the paths that would carry the Emperor to his crown.

The writ of immunity sat in his saddlebag, still unsigned.

He had calculated every cost of the coronation, every political debt, every concession that Charlemagne would need to make to secure the crown from Pope Leo. The arithmetic was brutal. The Emperor would need to humble himself before the papacy in ways that would shock the Frankish nobility. He would need to make promises he could not keep, alliances that would sour, appointments that would breed resentment.

Hildegard had been right. The price of the crown was so high that any sane man would balk.

But Charlemagne was not sane. He was something else entirely—a force of nature dressed in royal robes, a man who measured kingdoms in the span of his ambition.

“You are frowning at that map like it bit you,” Rotrude said.

Aldric looked up. The princess had ridden ahead of the main column with only two guards, her horse lathered and her cheeks flushed with the cold. She swung down from the saddle with the ease of a woman who had grown up in camps and courts alike.

“I am calculating,” Aldric said.

“The cost of my father’s ambition?”

“The cost of my freedom.”

Rotrude smiled. It was the same smile she had worn at Paderborn, the one that suggested she knew more than she was saying. She walked to his wall and sat beside him, close enough that he could smell the lavender she used to scent her riding clothes.

“Hildegard is here,” she said.

Aldric’s hand stilled on the map. “I know.”

“She is watching you. I wonder why.”

“She has always watched me. It is her chief amusement.”

“No,” Rotrude said, and there was something different in her voice now, something almost serious. “She is watching to see which oath you will break first. The one to my father, or the one you made to yourself when you were young—that you would never be chained to greatness.”

Aldric turned to look at her. The princess’s eyes were grey in the dim light, like the sky above them, full of weather that had not yet broken.

“You know a great deal about oaths I made when I was young,” he said.

“I know a great deal about you, Lord Aldric. I have made it my business to learn.” She paused. “My father thinks you are a tool to be used. Hildegard thinks you are a problem to be solved. Gerold thinks you are a mystery to be endured.”

“And you?”

Rotrude’s smile returned, but it was softer now. “I think you are a man who has spent so long running from his own potential that he has forgotten what it looks like.”

Aldric felt the words land like stones in his chest. He opened his mouth to respond, but Rotrude was already standing, brushing the dust from her skirts.

“We should ride,” she said. “Rome will not wait forever.”

She mounted her horse and rode away without looking back, leaving Aldric alone with the map and the weight of her words.

He sat there for a long moment, staring at the road that coiled south like a serpent. Then he rolled the map carefully and tucked it into his saddlebag, beside the writ that had never been signed.

Gerold appeared at his elbow. “The princess talks too much.”

“She talks exactly enough,” Aldric said. “That is what makes her dangerous.”

They rode through the afternoon, the landscape shifting from vineyard to pasture to the first scrubby hills that marked the approach to the Campagna. The clouds had broken by evening, revealing a sky of molten gold and violet, the kind of sky that made Aldric think of his own hills in the Vosges, where the wine grapes would be turning to amber in the cellars.

He was thinking of home when the rider appeared on the road ahead—a lone horseman, mud-spattered and exhausted, reeling in the saddle like a man who had not slept in days.

Aldric spurred forward, Gerold close behind. The rider saw them and raised a hand, then slid from his horse in a heap of exhaustion.

Aldric dismounted and knelt beside him. The man was young, barely more than a boy, his face grey beneath the grime.

“Lord Aldric?” the boy whispered.

“I am he.”

The boy fumbled at his belt and produced a leather tube, sealed with wax. “From the Abbess Hildegard. She said you would be on this road. She said to tell you—” The boy coughed, a wet sound that spoke of lung fever. “She said to tell you that the arithmetic has changed.”

Aldric took the tube and broke the seal. The parchment within was written in Hildegard’s precise hand, the letters small and sharp, and as he read, the blood drained from his face.

Gerold stepped closer. “What is it?”

Aldric looked up, and for the first time in a long while, his eyes held nothing of the lazy cynicism that had become his armor. They held something else entirely—something that might have been fear.

“The Emperor has sent word to Pope Leo,” Aldric said slowly. “He has agreed to every condition, every concession, every humiliation. The price of the crown has been paid in full, and Charlemagne has accepted it without a single counter-offer.”

“Then the coronation will proceed,” Gerold said.

“The coronation will proceed,” Aldric agreed. “And Hildegard says there is only one way left to stop it. Only one piece of arithmetic that has not yet been settled.”

He turned the parchment over, and on the back, in a single line, was written:

*The oath you swore to me at Metz. I am calling it in.*

Aldric stared at the words until the light failed, and the road to Rome vanished into the dark.