Philip Chesney Yorke, 1911 Encyclopædia Britannica, Volume 10… (1911)
“ On that day the earl of Suffolk, as lord chamberlain, visited the vault, accompanied by Monteagle, remarked the quantity of faggots, and asked Fawkes, now described as “a very tall and desperate fellow,” who it was that rented the cellar. Percy’s name, which Fawkes gave, aroused fresh suspicions and they retired to inform the king. At about ten o’ clock Robert Keyes brought Fawkes from Percy a watch, that he might know how the anxious hours were passing, and very shortly afterwards he was arrested, and the gunpowder discovered, by Thomas Knyvett, a Westminster magistrate. ”
