As I suspected, Piero was there. Like me, he was an insatiable student, often demanding more of his tutors than they knew, with the result that we frequently encountered each other huddled behind book. Unlike me, he was, at a rather immature sixteen, still cherub-cheeked, with close-cropped ringlets and a sweet, ingenuous temperament. I trusted him more than anyone, and adored him as a brother.
Piero sat cross-legged on the floor, squinting down at the heavy tome open in his lap, utterly captivated and utterly calm. He glanced up at me, and just as quickly returned to his reading.
“I told you this morning about Passerini coming,” I said. “The news is very bad. Pope Clement has fallen.”
Piero sighed calmly and told me the story of Clement’s predicament, which he had learned from the cook. In Rome, a secret passageway leads from the Vatican to the fortress known as the Castel Sant’Angelo. Emperor Charles’s mutinous soldiers had joined with anti-Medici fighters and attacked the Papal Palace. Caught unawares, Pope Clement had run for his life—robes flapping like the wings of a startled dove—across the passage to the fortress. There he remained, trapped in his stronghold by jeering troops.
Piero was totally unfazed by it all.
“We’ve always had enemies,” he said. “They want to form their own government. The Pope has always known about them, but Mother says he grew careless and missed clear signs of trouble. She warned him, but Clement didn’t listen.”
“But what will happen to us?” I said, annoyed that my voice shook. “Piero, there are men outside burning our banner! They’re calling for our deaths!”
“Cat,” he said softly and reached for my hand. I let him draw me down to sit beside him on the cool marble.
“We always knew the rebels would try to take advantage of something like this,” Piero said soothingly, “but they aren’t that organized. It will take them a few days to react. By then, we’ll have gone to one of the country villas, and Mother and Passerini will have decided what to do.”
I pulled away from him. “How will we get to the country? The crowd won’t even let us out of the house!”
“Cat,” he chided gently, “they’re just troublemakers. Come nightfall, they’ll get bored and go away.”
Before he could say anything further, I asked, “Who is the astrologer’s son? Your mother sent Agostino to fetch him.”
He digested this with dawning surprise. “That would be Ser Benozzo’s eldest, Cosimo.”
I shook my head, indicating my ignorance.
“The Ruggieri family has always served as the Medicis’ astrologers,” Piero explained. “Ser Benozzo advised Lorenzo il Magnifico. They say his son Cosimo is a prodigy of sorts, and a very powerful magician. Others say such talk is nothing more than a rumor circulated by Ser Benozzo to help the family business.”
I interrupted. “But Aunt Clarice doesn’t put a lot of faith in such things.”
“No,” he said thoughtfully. “Cosimo wrote Mother a letter well over a week ago. He offered his services; he said that serious trouble was coming, and that she would need his help.”
I was intrigued. “What did she do?”
“You know Mother. She refused to reply, because she felt insulted that such a young man—a boy, she called him—should presume that she would need help from the likes of him.”
“Father Domenico says it’s the work of the Devil.”
Piero clicked his tongue scornfully. “Magic isn’t evil—unless you mean for it to hurt someone—and it’s not superstition, it’s science. It can be used to make medicines, not poisons. Here.” He proudly lifted the large volume in his lap so that I could see its cover. “I’m reading Ficino.”
“Who?”
“Marsilio Ficino. He was Lorenzo il Magnifico’s tutor. Old Cosimo hired him to translate the Corpus Hermeticum, an ancient text on magic. Ficino was brilliant, and this is one of his finest works.” He pointed at the title: De Vita Coelitus Comparanda.
“Gaining Life from the Heavens,” he translated. “Ficino was an excellent astrologer, and he understood that magic is a natural power.” He grew animated. “Listen to this….” He translated haltingly from the Latin. “ ‘Using this power of the stars, the Magi were first to worship the infant Christ. Therefore, why fear the name Magus, a name which is pleasing to the Gospel?’”
“So this astrologer’s son is coming to bring us help,” I said. “Help from God’s stars.”
“Yes.” Piero gave a reassuring nod. “Even if he weren’t, we would still be all right. Mother might complain, but we’ll just go to the country until it’s safe again.”
I let myself be convinced—temporarily. On the library floor, I nestled against my cousin and listened to him read in Latin. This continued until Aunt Clarice’s slave Leda—pale, frowning, and heavily pregnant—appeared in the doorway.
“There you are.” She motioned impatiently. “Come at once, Caterina. Madonna Clarice is waiting.”
The horoscopist was a tall, skinny youth of eighteen, if one estimated generously, yet he wore the grey tunic and somber attitude of a city elder. His pitted skin was sickly white, his hair so black it gleamed blue; he brushed it straight back to reveal a sharp widow’s peak. His eyes seemed even blacker and held something old and shrewd, something that fascinated and frightened me. He was ugly: His long nose was crooked, his lips uneven, his ears too large. Yet I did not want to look away. I stared, a rude, stupid child.
Aunt Clarice said, “Stand there, Caterina, in the light. No, save your little curtsy and just hold still. Leda, close the door behind you and wait in the hall until I call you. I’ll have no interruptions.” Her tone was distracted and oddly soft.
After a worried glance at her mistress, Leda stole out and quietly shut the door. I stepped into a pane of sunlight and stood dutifully a few paces from Clarice, who sat beside the cold fireplace. My aunt was arguably the most influential woman in Italy and old enough to be this young man’s mother, but his presence—calm and focused as a viper’s before the strike—was the more powerful, and even Clarice, long inured to the company of pontiffs and kings, was afraid of him.
“This is the girl,” she said. “She is plain, but generally obedient.”
“Donna Caterina, it is an honor to meet you,” the visitor said. “I am Cosimo Ruggieri, son of Ser Benozzo the astrologer.”
His appearance was forbidding, but his voice was beautiful and deep. I could have closed my eyes and listened to it as if it were music.
“Think of me as a physician,” Ser Cosimo said. “I wish to conduct a brief examination of your person.”
“Will it hurt?” I asked.
Ser Cosimo smiled a bit more broadly, revealing crooked upper teeth.
“Not in the least. I have already completed a portion; I see that you are quite short for your age, and your aunt reports that you are rarely sick. Is that true?”
“Yes,” I answered.
“She is always running in the garden,” Clarice offered palely. “She rides as well as the boys do. By the time she was four, we could not keep her from the horses.”
“May I …?” Ser Cosimo paused delicately. “Could you lift your skirts a bit so that I can examine your legs, Caterina?”
I dropped my gaze, embarrassed and perplexed, but raised the hem of my dress first above my ankles and then—at his gentle urging—to my knee.
Ser Cosimo nodded approvingly. “Very strong