John stood with his back to the door, watching his master charming the powerful money men of Amsterdam. The scene looked like one of the new oil paintings that King Charles kept buying. The room was in half-darkness, windows shrouded with thick embroidered curtains. The table was lit only by a couple of candles behind an engraved shade which threw strange cabalistic patterns on the walls. There were three men on one side of the table and Buckingham on the other. One man was a solid burgher, a father of the city and a cautious man. To him Buckingham deferred with a charming youthful respect, and as the meeting went on John watched the big man slowly unbend, like a horse on the tow path bending its neck to be patted. Next to him was a Jewish financier, his eyes as dark as Buckingham’s own, his hair as black and lustrous as the duke’s. He wore a little cap on the back of his head and a long dark suit in plain material. The Low Countries was a place that prided itself on its tolerance; John thought that Buckingham would not have sat on equal terms with a Jew at any other table in Europe.

The duke was uneasy with the financier. He could not find the right tone to tempt him. The man was guarded, his long face giving away nothing. He spoke little and when he did, it was in French with an accent which John could not identify. He treated Buckingham with deference, but it seemed as if there was a secret inner judgement that he was keeping hidden. John was as superstitious and fearful of the Jews as any Englishman. He feared this man in particular.

The third man was from some strand of nobility who would have access to a vast fortune if these other two approved. He was slim and young and richly dressed, and he had no aptitude for the carefully written calculations of profit and interest on the small pieces of paper which the other two men were exchanging. He leaned back in his chair and gazed idly around him. Every now and then he and Buckingham would exchange a smile as if to agree that they two were men of the world and these vulgar details were beneath them.

‘We have to consider the issue of the security of the jewels,’ the burgher said. ‘They will be lodged here.’

Buckingham shook his head. ‘They cannot be taken from London,’ he said. ‘But you shall have your own man in London to guard them, if you wish. And a sealed letter from King Charles himself to acknowledge your right.’

The burgher looked uneasy. ‘But if we should need to collect them?’