But the most subtle and far-reaching research into past transactions was due to the Greffier Cornelis Aerssens, father of the Ambassador Francis, and to a certain Nicolas van Berk, Burgomaster of Utrecht.
The process of tale-bearing, hearsay evidence, gossip, and invention went back a dozen years, even to the preliminary and secret conferences in regard to the Treaty of Truce.
Readers familiar with the history of those memorable negotiations are aware that Cornelis van Aerssens had compromised himself by accepting a valuable diamond and a bill of exchange drawn by Marquis Spinola on a merchant in Amsterdam, Henry Beekman by name, for 80,000 ducats. These were handed by Father Neyen, the secret agent of the Spanish government, to the Greffier as a prospective reward for his services in furthering the Truce. He did not reject them, but he informed Prince Maurice and the Advocate of the transaction. Both diamond and bill of exchange were subsequently deposited in the hands of the treasurer of the States-General, Joris de Bie, the Assembly being made officially acquainted with the whole course of the affair.
It is passing strange that this somewhat tortuous business, which certainly cast a shade upon the fair fame of the elder Aerssens, and required him to publish as good a defence as he could against the consequent scandal, should have furnished a weapon wherewith to strike at the Advocate of Holland some dozen years later.
But so it was. Krauwels, a relative of Aerssens, through whom Father Neyen had first obtained access to the Greffier, had stated, so it seemed, that the monk had, in addition to the bill, handed to him another draft of Spinola's for 100,000 ducats, to be given to a person of more consideration than Aerssens. Krauwels did not know who the person was, nor whether he took the money. He expressed his surprise however that leading persons in the government "even old and authentic beggars"—should allow themselves to be so seduced as to accept presents from the enemy. He mentioned two such persons, namely, a burgomaster at Delft and a burgomaster at Haarlem. Aerssens now deposed that he had informed the Advocate of this story, who had said, "Be quiet about it, I will have it investigated," and some days afterwards on being questioned stated that he had made enquiry and found there was something in it.
So the fact that Cornelis Aerssens had taken bribes, and that two burgomasters were strongly suspected by Aerssens of having taken bribes, seems to have been considered as evidence that Barneveld had taken a bribe. It is true that Aerssens by advice of Maurice and Barneveld had made a clean breast of it to the States-General and had given them over the presents. But the States-General could neither wear the diamond nor cash the bill of exchange, and it would have been better for the Greffier not to contaminate his fingers with them, but to leave the gifts in the monk's palm. His revenge against the Advocate for helping him out of his dilemma, and for subsequently advancing his son Francis in a brilliant diplomatic career, seems to have been—when the clouds were thickening and every man's hand was against the fallen statesman—to insinuate that he was the anonymous personage who had accepted the apocryphal draft for 100,000 ducats.
The case is a pregnant example of the proceedings employed to destroy the
Advocate.
The testimony of Nicolas van Berk was at any rate more direct.
On the 21st December 1618 the burgomaster testified that the Advocate had once declared to him that the differences in regard to Divine Worship were not so great but that they might be easily composed; asking him at the same time "whether it would not be better that we should submit ourselves again to the King of Spain." Barneveld had also referred, so said van Berk, to the conduct of the Spanish king towards those who had helped him to the kingdom of Portugal. The Burgomaster was unable however to specify the date, year, or month in which the Advocate had held this language. He remembered only that the conversation occurred when Barneveld was living on the Spui at the Hague, and that having been let into the house through the hall on the side of the vestibule, he had been conducted by the Advocate down a small staircase into the office.
The only fact proved by the details seems to be that the story had lodged in the tenacious memory of the Burgomaster for eight years, as Barneveld had removed from the Spui to Arenberg House in the Voorhout in the year 1611.