According to Father Gerard, he was 'a grave and sober man, and of great wit and sufficiency, as I have heard divers say that were well acquainted with him. His virtue and valour were the chiefest things wherein they could expect assistance from him; for, otherwise, his means were not great.' His close intimacy with Lord Mordaunt brought that nobleman into grave trouble with the Government, in the same way as Percy's intimacy with his patron, Northumberland, proved injurious to that unsuspecting peer. At Catesby's advice, the care of the conspirators' house at Lambeth, used by them as their London rendezvous, was entrusted to the stern and undaunted Keyes.
Thomas Bates sprang from a very different origin to that of his confederates. He was an old and faithful servant of Catesby, to whom he was devotedly attached, and by whom he was admitted into the confederacy, as one upon whom his powerful master could implicitly rely, and who would prove useful as a humble messenger carrying despatches between the conspirators. According to Sir Edward Coke (Attorney-General), who appeared for the Crown at Bates's trial, the manner of his reception was as follows—
'Concerning Thomas Bates, who was Catesby's man, as he was wound into this treason by his master, so was he resolved, when he doubted of the lawfulness thereof, by the doctrine