`My dearest, talk if you feel like talking but only when you are with your family. When you are with the man who engaged you, please,

I beg of you, talk no more than is necessary and, when it is time to lie down, do nothing roughly or carelessly. Work to captivate your lover and make him love you more. And remember! It is not enough to have beautiful eyes and lovely hair. Only your art which is your brain will pull you through. The difficulty is in keeping lovers, not in getting them. Only make promises you know you can keep, nothing more, and whatever other good opportunity comes your way never shut your door in the face of the one who is entitled to sleep with you. You must swear an oath daily that you will take many little baths as often as you can, then wash and wash again, for if there is loving advantage in giving oneself to many, the least we can do is to stay clean.'

When Rosa was discovered by the tenebrous Cardinal Spina, mama's own place in the carnal garden had long. before been transplanted from the ruffiana parterres to a sunlit terrace of the mezzana -mistress of the latest love songs on the lute and viola da braceio, writer of elegant love letters for her clients in the best Latin, French or German,' and a brilliant artist of transactions which made rich old men believe it was they who were being placed within the proximity of seemingly unattainable beautiful women. She moved her family into a small palazzo in Rome to make comfortable the wealthy churchmen; rich businessmen and condottieri generals from all over Italy who were her clients.

Touchingly, Cardinal Spina's discovery of Rosa had been made to happen in a church. Selective church attendance was the best advertising for a courtesan. It showed off her beauty as well as her clothes and jewels, which were tributes to her desirability. Young and poor men jostled each other outside church doors to watch the women enter, preceded by pages and menservants, surrounded by supporters, while still more servants closed in at the rear. In May 1401, on the feast day of Santa Grazia di Traghetto, all the space between the altar itself and the cardinals' seats was occupied by courtesans, including Rosa.

Previous to setting his hooded eyes upon Rosa, Spina had made his carnal discoveries at night, prowling the streets in disaffecting cloaks and huge disguising hats to move into the beds of the women his agents had put aside for his pleasure, while he carried out his endless search for Bernaba Minerbetti. It was not because he was in any way ashamed of his desires (or of Romans becoming aware of them) but rather from his devious conviction that his right testicle must never know what his left testicle was doing. Since the night Bernaba Minerbetti had deserted him, disgracing and humiliating him, he had been searching for her. He was prepared to spend the rest of his life searching for her because she must pay for what she had done. She had not returned to Bari his agents had sought her out there and found nothing. She must be in Rome. He had paid for her and had not yet finished with her. He had vowed to inflict sfregia upon her if she went with another man. It was his duty to his honour, to his being a Sicilian, to accomplish that vow, He roamed the streets at night looking for her. The discovery of Rosa: did not change the need to find Bernaba Minerbetti and to ruin her face; but Rosa could fulfil other needs. He would maintain her. An occasional arrangement at first was best for testing these women, he sensed. It was not a matter of sampling, but of character. Also, he had refused to establish any courtesan under his permanent protection because he could not live with the idea of unseen people attempting to get her to get him to do things for them. Even after spending most of my life around churchmen, I can still say that I have never met a man as devious as Piero Spina.

Decima Manovale taught her daughters to search for their clients' oddnesses, weaknesses between man and woman – so when Rosa was brought together with Spina, she acted out convincing terror at the possibility of being known to Rome as a cardinal's lover because then it could be bruited about that she was a courtesan, which he knew she was not. No! And he was to tell her nothing of his life, for women were weak and their tongues wagged. She would place her long, silken hand over his mouth when he offered her as much as a good evening, because why did she need to know anything except her love for him, or to feel anything apart from the madness which came over her when he touched her? She always wept when she returned to him and when they parted.

Because all his life Spina had persevered in never telling anyone his inner (or outer) thoughts of what he was doing, had done or planned to do – he had been unable to trust anyone until his dear little shepherdess had wandered into his life – he had to tell her everything. Spina became an extraordinary source of information for Manovale.

`Never cease exploring the vastness of self-doubt and uncertainty within your clients,' Manovale instructed her daughters, `for these, lead to gold and power. Great wealth is the source of friendship and praise, of fame and authority, for the individual as for the state. A family must erect and decorate buildings, possess beautiful books, much power and fine horses.'

The day after her arrival in Florence with her daughter and Cosimo di Medici, Signora Manovale, feet together, hands in her lap, eyes (frequently) cast down, sat in the Medici house in the Piazza del Duomo of Florence, facing Giovanni di Bicci di Medici.

Behind the senior Medici, beyond the windows, were the almost imperceptibly rising walls and dome of the cathedral, which, the city of Florence intended to be grander than any yet built. Cosimo sat soberly at his father's right hand, thinking pure thoughts, no doubt.

When my son told me of his plans for you,' the father said to Manovale, 'I rejected them. At least I thought I had, but my son and I think alike, I have trained him so, and your possible usefulness – women are not usually such useful objects – began to emerge as I studied your dossier. I asked old Toreton the condottiere to come to see me. He remembers you as what he called "the most promising soldier on his staff What do you say to that?'

`I knew him, of course. He was a kind man. He taught me so much of what little I know.'

`About war?'

She shrugged. `About war. War was for men. Mainly about how to gather intelligence and how to use it.'

'I will pay you ten gold florins a month.'

Manovale told Bernaba that she had tried not to laugh but she couldn't help it. She laughed, rocking in her seat, holding a handkerchief to her face, with her left hand holding her side. She laughed with disappointment, which is almost the equal of despair. She laughed at the waste of her time. When she was able to regain control of herself, she wiped her eyes and said, `And, of course, you would expect me to give up my business as a mezzana to work for you?'

He looked at her steadily, `We misunderstood each other,' he said, `I offered the ten gold florins a month during the first three months in which you offered to work for nothing,'

`Ah. Such a difference.'

Signora – we have been after a piece of northern business for almost four, years. Church business Church business is important wherever it is to be found, and this happens to be a large matter involving the Archbishop of Mainz, who will go to Rome to see the pope in one month's time. There is French Church business which is also important. We have learned that the Bishop: of Cambrai, who is the confessor to the King of France and a close adviser to Benedict, the Avignon pope, will go to Rome to see Pope Boniface on a most secret mission shortly after Mainz's visit. We must always remain several steps ahead, of the other banks – here and elsewhere. Is all of this comprehensible to you so far?'