He had ample opportunity to observe events in the Vatican, but of his experiences he recorded nothing; or, if he did, his diary was destroyed in the sack of Rome in 1527, when he lost all his belongings.
Among Lucretia's personal acquaintances was still another man, one who was in a better position than any one else to write the history of the Borgias.

This was the Nestor of Roman notaries, old Camillo Beneimbene, the trusted legal adviser of Alexander and of most of the cardinals and grandees of Rome.

He knew the Borgias in their private as well as in their public character; he had been acquainted with Lucretia from her childhood; he drew up all her marriage contracts.

His office was on the Lombard Piazza, now known as S.Luigi dei Francesi.

Here he worked, drawing up legal documents until the year 1505, as is shown by instruments in his handwriting.[71] A man who had been the official witness and legal adviser in the most important family affairs of the Borgias for so long a time, and who, therefore, was familiar with all their secrets, must have occupied, so far as their house, and especially Lucretia, were concerned, the position of a close friend.