Some time after Don John's appointment to the governorship of the Netherlands Perez accidentally became cognisant of his inconveniently ambitious " empresa de Inglaterra," in which he was to rescue Mary Queen of Scots, marry her, and so ascend the throne of England.
Sixtus was cognisant of the conspiracy of the Pazzi, plotted (1478) by his nephew, Cardinal Riario, against Lorenzo de' Medici.
Father Greenway and Father Garnet, the Jesuits, were both cognisant of the plot (see Garnet, Henry).
Moreover, by section 5 of the Money-lenders Act 1900, where any proceedings are taken against the senders of these circulars to infants, if it is proved that the person to whom the document was sent is an infant, the person charged will be deemed to have been cognisant of the fact unless he proves that he had reasonable grounds for believing the infant to be of full age.
It is maintained by those admirers of Mary who assume her to have been an almost absolute imbecile, gifted with the power of imposing herself on the world as a woman of unsurpassed ability, that, while cognisant of the plot for her deliverance by English rebels and an invading army of foreign auxiliaries, she might have been innocently unconscious that this conspiracy involved the simultaneous assassination of Elizabeth.