There is no question that many, perhaps most of the people
that had the luxury to spend their time writing sonnets,
knew the myths of Classical Greece and Rome, read Latin,
and studied classical Rhetoric during their studies at
major universities, and were members of the royal court.
They may have lived in palaces like the above, not overly
concerned with warm clothes, obtaining food, avoiding the
crime found in cities like London. Such royal personages
could spend their long, leisurely hours writing sonnets,
and perhaps it really didn't require so much genius?