From The Art of English Poesy by George Puttenham (1589)

Henry Earl of Surrey and Sir Thomas Wyatt, between whom I find very little difference, I repute them (as before) for the two chief lanterns of light to all others that have since employed their pens upon English Poesy: their conceits were lofty, their styles stately, their conveyances cleanly, their terms proper, their meter sweet and well proportioned, in all imitating very naturally and studiously their Master Francis Petrarch.