Letters from Sir Robert Cecil to Sir George Carew is in Tudor Books.
5th February 1600. Court. To George Carew 1st Earl Totnes [aged 44].
We have no news but that there is a misfortune befallen Mistris Fitton [aged 21] for she is proved with child, and the E. of Pembroke [aged 19] being examyned confesseth a ffact, but utterly renounceth all marriage. I fear they will both dwell in the Tower [Map] awhyle, for the Queen [aged 66] have vowed to send them thether.
When you thing fit you may send over 1076 [Desmond] but retain his patent with yourself. You shall not need to send to know her Ma'ties further pleasure. In many wayes lett not Cashell come over. The more excpectation which 1076 leaveth behynd him o returne the better construction wilbe made of his departure.
Robert Cecil 1st Earl Salisbury [aged 36].