 Ferrers also contributed verses to Leicester's lavish entertainment of Queen Elizabeth at Kenilworth Castle in July 1575.Confusion concerning Ferrers' literary career was engendered in 1589 by the author of "The Arte of English Poesie" (thought to be George Puttenham), who in comparing Ferrers to other poets of the reign of Edward VI stated that he was "the principal man in this profession", and in relation to the others "a man of no less mirth & felicity … but of much more skill, & magnificence in his meter, and therefore wrate for the most part to the stage, in Tragedy and sometimes in Comedy or Interlude, wherein he gave the king so much good recreation, as he had thereby many good rewards".Puttenham later praised Lord Buckhurst and Ferrers "for tragedy", saying that "for such doings as I have seen of theirs [they] do deserve the highest praise".