it means that the family woke up due to the sunlight coming through the bedroom windows. the use of "peered" in this sentence is the personification, as the sun can't really "peer."
Oedipus Rex, also known by its Greek title, Oedipus Tyrannus, or Oedipus the King, is an Athenian tragedy by Sophocles that was first performed around 429 BC. Originally, to the ancient Greeks, the title was simply Oedipus, as it is referred to by Aristotle