Which preposition to use with privado

of Occurrences 1%

Therefore she wheeled about; and to put all suspicion afar off, and loath to keep him any longer by her, for that she knew secrets are not long-lived, she sent him unknown into Portugal, with the Lady Brampton, an English lady, that embarked for Portugal at that time, with some privado of her own, to have an eye upon him, and there he was to remain, and to expect her further directions.

Which preposition to use with  privado